Timah Tbk Research Articles

Kajian Teknis Kinerja Jig Primer terhadap Kadar Recovery dan Looses Bijih Timah pada SHP KIP Mitra Matras di Bidang Pengolahan Mineral Unit Pengolahan PT Timah Tbk

Bidang Pengolahan Mineral Processing Unit of PT Timah Tbk operates in the field of tin ore processing. The problem at the research location is that there is no standard operating standard for the Primary Jig tool for washing Processing Waste (SHP). The aim of this research is to determine the settings for the Primary Jig variables in order to obtain optimal levels, Sn recovery and looses. The research method used is Grafity Concentration. The feed used is SHP from KIP Mitra Matras. The experiment was carried out 21 times. Each experiment used 7 variations of Primary Jig stroke speed (300 rpm, 350 rpm, 400 rpm, 450 rpm, 500 rpm, 550 rpm, 600 rpm) and Bed thickness (70 mm, 80 mm, 90 mm). Grain Counting Analysis shows a feed Sn content value of 9.96%. GCA analysis shows that the minerals in the bait are cassiterite, ilmenite, monazite, zircone, pyrite, siderite, limonite, tourmaline, quartz and iron rust. Low stroke speed results in high concentrate Sn content with low Sn recovery and little looses wasted and vice versa. A high Bed thickness results in low Sn concentrate content, high Sn recovery, and a lot of looses is wasted, and vice versa. Setting the optimal Primary Jig operating variables with variations in punch speed of 450 rpm and Bed thickness of 80 mm obtained a Sn content of 41.36% and a Sn recovery of 60.11%. Based on the results of calculating the degree of liberation, the highest average value of the degree of liberation was obtained at mesh -100, indicating that the SHP KIP Mitra Matras concentrate is classified as having a fine grain size.

Timah dalam Pembentukkan Budaya dan Ekonomi Masyarakat Bangka

This research begins with the assumption that the tin policy during the Palembang- Independence Sultanate had an influence on the cultural and economic formation of the Bangka people. This research is a library research using a historical approach. Primary data used in this research was obtained from the PT, Timah Tbk Museum Archives in Pangkalpinang. The theory used in this research is the theory of historical materialism by Karl Marx. The results of this research show that the existence of policies on tin mining from the time of the Palembang Sultanate until independence had a direct impact on the people of Bangka who could not access natural tin resources because they were controlled by tin rulers. The existence of tin mining activities then contributed to the formation of culture and economic changes in the people of Bangka.

Perencanaan Tahapan Persiapan Dan Perhitungan Reklamasi Di Lahan Bekas Tambang Air Rikai PT Timah Tbk Kabupaten Bangka

The research location chosen was the Air Rikai ex-mining land, which is an alluvial ex-mining land within the IUP of PT Timah Tbk. The negative impact that arises from mining is in the form of land damage. This research aims to overcome damage and also ensure that reclamation activities can be carried out well. The method used in this research is a quantitative method. The data taken is in the form of soil samples, soil pH and water pH data, topographic data (x,y,z coordinates) and bathymetric data for the depth of the pit. The results of data processing and analysis show that the condition of the land to be reclaimed has an area of 13 Ha and is divided into 2, namely voids with a total area of 1.57 Ha and land area of 11.43 Ha. Land use is carried out by stockpiling overburden with a required volume of overburden of 35,511.54 m³. Land leveling with a volume of pushed soil of 35,280 m³. Arrangement of the edge of the pit with a volume of soil moved of 230.29 m³. Construction of drainage channels with an excavation volume of 214.59 m³. Installation of concrete buis type culverts with dimensions of 50 x 50 cm and a length of 50 cm. In the revegetation, 1,517 oil palm trees were planted, then 463 sea cypress trees were planted along the underside and LCC seeds to help loosen the soil. Treating acid mine drainage with 350 water hyacinths. The costs required for reclamation are divided into 2, namely, Direct Costs and Indirect Costs. The direct costs required are IDR 679,286,160 and the indirect costs required are IDR 213,975,140. The total costs required for reclamation of land with an area of 13 Ha are IDR 893,261,300.

Analysis of Factors Affecting Stock Price Movement: Case Study on PT Timah Tbk

PT TIMAH Tbk merupakan anggota perusahaan holding pertambangan MIND ID yang bergerak di sektor pertambangan dan pengolahan komoditas timah. Sebagai perusahaan yang terdaftar di Bursa Efek Indonesia, kinerja yang dihasilkan oleh Perusahaan menjadi aspek penting yang diperhatikan oleh para investor dalam mengambil sebuah keputusan investasi. Kinerja perusahaan yang baik akan meningkatkan minat investor untuk membeli saham Perusahaan tersebut, sehingga akan mempengaruhi berapa harga saham dari PT TIMAH Tbk itu sendiri. Penelitian ini bertujuan untuk menguji bagaimana pengaruh dari profitabilitas, harga komoditas, nilai tukar mata uang asing, solvabilitas, volume produksi dan prediksi kebangkrutan sebagai variabel independen terhadap harga saham sebagai variabel dependen. Penelitian ini merupakan penelitian kuantitatif dengan jenis penelitian yang digunakan adalah penelitian kausal. Hasil dari penelitian ini menunjukkan bahwa secara parsial, variabel harga komoditas dan prediksi kebangkrutan memiliki pengaruh positif signifikan terhadap harga saham PT TIMAH Tbk. Sedangkan variabel profitabilitas, nilai tukar, solvabilitas dan volume produksi secara parsial tidak memiliki pengaruh signifikan terhadap harga saham PT TIMAH Tbk. Hasil penelitian juga menunjukkan bahwa secara simultan, variabel profitabilitas, harga komoditas, nilai tukar, solvabilitas, volume produksi dan prediksi kebangkrutan memiliki pengaruh signifikan terhadap harga saham PT TIMAH Tbk. Implikasi dari hasil penelitian ini adalah bahwa investor atau calon investor perlu mempertimbangkan faktor harga komoditas dan prediksi kebangkrutan dalam mengambil keputusan investasi pada saham PT TIMAH Tbk. Perusahaan juga perlu memperhatikan faktor-faktor tersebut dalam mengelola bisnisnya agar dapat meningkatkan harga saham dan menarik minat investor.

Vicarious Responsibility Theory on the Corruption Case by PT Timah Tbk

The alleged corruption case of tin commodity trading system in the PT Timah Tbk Mining Business License (IUP) area for the 2015-2022 period has caused state losses of hundreds of trillions of rupiah. This article examines the applicability of vicarious responsibility theory or substitute responsibility theory to the case of corruption in the tin commodity trading system in the PT Timah Tbk Mining Business License (IUP) area. This research aims to look at all aspects of corporate liability theory, one of which is vicarious responsibility theory. Related to the corruption case of PT Timah Tbk, vicarious responsibility theory does not apply, because the perpetrator is a superior, so it is not possible for his subordinates or other people to take responsibility for his actions

Perhitungan Volume Stockpile dan Pengoptimalan Waktu Pengolahan Stockpile 3, 5 dan 6 Terhadap Produksi Alat Gali muat dan Alat Angkut pada TB Primer Batubesi PT Timah Tbk

PT Timah Tbk's Batubesi Primary Large Mine has experienced a significant decline in production in recent years, causing a change in the mining process to stockpile management that is still economical with a grade of 0.2%. This study aims to determine the volume and production of stockpiles 3, 5 and 6, the type of sediment and Sn content of stockpile material and the time required to spend stockpile material 3, 5 and 6 in order to get the optimal time. The method used is a quantitative method by taking cycle time data as much as 30 data and analyzing sample levels using XRF on each stockpile. The results of this study obtained the volume of stockpile 3 material is 132,648.42 m3,, stockpile 5 is 162,570.25 m3, and stockpile 6 is 33,090.19 m3. The calculated machine productivity at stockpile 3 is 42.17 tons/hour, stockpile 5 is 48.11 tons/hour and stockpile 6 is 39.53 tons/hour. The highest Sn content is found in stockpile 6 which is 0.33% with the type of skarn sediment. While the lowest Sn content is found in stockpile 3 which is 0.2% with oxide clay sediment type. In stockpile 5, the Sn content is 0.31% with the type of oxide clay sediment. The remaining volume of stockpile material in stockpiles 3, 5 and 6 can be spent with a time of 2.78 years using 1 unit of excavation equipment and 1 unit of transportation equipment. Optimization is carried out so that the remaining stockpile reserves can be spent within 1.74 years using 1 unit of excavation equipment and 2 units of transport equipment.

Evaluasi Kinerja Alat Pengolahan Wet Belt Low Intensity Magnetic Separator (WBLIMS) Untuk Meningkatkan Kadar dan Recovery Sn di TB Primer Batubesi PT Timah Tbk Kabupaten Belitung Timur

Primary TB Batubesi Site a subsidiary of PT Timah Tbk, processes primary tin feed stockpile and SHP of oxide clay type using various tools, including the Wet Belt Low Intensity Magnetic Separator (WBLIMS). Currently, WBLIMS can only produce tin concentrate with a grade of 0.5-2% and a recovery of 5-8%, falling below the company's target of 8% grade and 15% recovery (XRF Test). This research conducted eight experiments with variations in feed types and rates. The WBLIMS feed from the stockpile has a Sn content of 0.62%, resulting in a tin concentrate with 1.21% Sn and a recovery of 7.05%. On the other hand, the feed from SHP has a Sn content of 0.61%, resulting in a tin concentrate with 0.95% Sn and a recovery of 5.11%. The type and rate of feed affect the increase in Sn grade and recovery. At low feed rates, the feed material yields lower Sn grade and recovery, while at high feed rates, the results are higher. Increasing the feed rate for WBLIMS from the stockpile leads to a decrease in Sn grade and recovery, whereas in the processing of SHP, the Sn grade increases but recovery varies. Experiments F1L1 and F2L3 yield the most optimal Sn grade and recovery, with F1L1 having a Sn grade of 2.28% and recovery of 11.54%, and F2L3 having a Sn grade of 2.87% and recovery of 9.24%. Although not reaching the company's target, these experimental results can enhance the Sn grade and recovery compared to the previous setup.

The effect of current ratio and debt to equity ratio on return on equity at PT. Timah Tbk

This study aims to partially determine the effect of the current ratio (CR) on return on equity (ROE). To find out if there is a partial effect of Debt to equity ratio (DER) on Return On Equity (ROE). To find out if there is an effect of the Current ratio (CR) and Debt-to-equity ratio (DER) simultaneously on Return On Equity (ROE). The population in this study is the financial statements of PT. Timah Tbk for the period 2010-2021. The method used in this study is a descriptive method using an associative approach. The data used is secondary data obtained from the site www.idx.co.id. Data management is processed using the Statistical Product and Service Solution (SPSS) software program version 26.0. Data analysis used is multiple linear regression, multiple correlations, determination correlation, f-test, t-test, and testing classical assumptions, including normality tests, multicollinearity tests, heteroscedasticity tests, and autocorrelation tests. The results of this study show that the current and debt-to-equity ratios significantly affect return on equity at pt. Timah Tbk, for the period 2010-2021, the current ratio partially does not substantially affect return on equity, while the Debt to equity ratio significantly affects return on equity. From the coefficient of determination test, it can be concluded that the two independent variables affect the return on equity at 36.5% while the system is 63.5% influenced by other factors not studied in this study.

LIQUIDITY, PROFITABILITY, AND SOLVENCY: COMPARATIVE ANALYSIS OF FINANCIAL PERFORMANCE

This study aims to analyze the comparison of financial performance of PT Timah Tbk with PT Golden Energy Mines Tbk in terms of liquidity, profitability and solvency ratios. This type of research data is secondary data. Data collection techniques with literature and documentation. Data analysis used in liquidity ratio analysis consists of Current Ratio (CR), and Quick Ratio (QR), profitability consisting of Return on Asset (ROA) and Return On Equity (ROE), and solvency ratios namely Total Debt To Equity Ratio and Total Debt To Total Asset Ratio. The results showed that PT Timah has more ability to pay its short-term debt, more ability to pay its short-term debt that has been reduced by inventory when compared to PT Golden Energy Mines Tbk. PT Golden Energy Mines Tbk has more ability to obtain net profit after tax from total assets, more ability to obtain net profit after tax from total equity when compared to PT Timah Tbk. PT Timah Tbk has a lower level of debt risk and a lower level of debt risk when compared to PT Golden Energy Mines Tbk.

ANALYSIS OF THE EFFECT OF COMPENSATION, WORK PERIOD ON EMPLOYEE MOTIVATION AT HR DIVISION PT TIMAH TBK

This abstract presents a significant study focusing on employee motivation and its impact on the HR Division of PT TIMAH Tbk. The emphasis on the importance of quality human resources as prime movers for company success is commendable. The research's quantitative data analysis using regression and hypothesis testing with SPSS ensures robust findings. Excited to see the presentation as it will shed light on how compensation factors and work period influence employee motivation, with the potential to positively impact the progress and productivity of the company. The study's practical implications, urging companies to consider compensation and work period when calculating employee rewards, will undoubtedly contribute to enhancing employee motivation and overall organizational performance. This research is a valuable addition to a conference program.

Tin Smelting using Carbonized Palm Kernel Shell as Reductant

PT Timah Tbk has a vision to become a leading environmentally friendly mining company. To achieve this, efforts are being made to use biomass, specifically palm kernel shells, as a reductant in the smelting process, aiming to reduce carbon emissions associated with smelting. Palm kernel shells are selected due to their abundant availability in the Bangka Belitung Islands Province, the operational area of PT Timah Tbk. Before being utilized in the smelting process, palm kernel shells undergo carbonization at a temperature of 400°C for 15 minutes to increase the content of fixed carbon, which plays a crucial role in tin reduction. Carbonized palm kernel shells consist of 51.4% fixed carbon, 27% volatile matter, 14.54% ash, and 7.06% inherent moisture. The smelting process using carbonized palm kernel shells takes place in a Reverberatory Furnace and serves as the initial stage of the tin smelting process. In this stage, tin concentrate is smelted to produce crude tin and slag 1, with a slag 1 assay typically ranging from 15% to 20%. After three cycles of smelting, the average formation of crude tin is 83.31%, the Sn slag assay is 18.70%, and the smelting capacity reaches 50 tons per day. These results align with the standards set for stage 1 of tin smelting at PT Timah Tbk, which traditionally uses coal as a reductant. Therefore, smelting tin with carbonized palm kernel shell as a reductant is a viable and feasible option.

Sol-gel synthesis of zirconia-based nanoparticles from the side product of tin mining

Indonesia has been one of the world’s primary source of tin since the early of 19th century. Bangka island has the largest tin abundant with a side product is zircon sand (ZrSiO4). The existence of zircon (ZrSiO4) is mostly associated with some of the valuable oxide compounds (VOC) and rare earth oxides (REO). The zirconia powders were synthesized from the zircon sand of PT. Timah Tbk by caustic fusion method followed by sol-gel method. The raw material zircon sand and as-synthesized zirconia were characterized through x-ray fluorescence (XRF), x-ray diffraction (XRD), surface area analysis and porositymeter, thermogravimetric and differential scanning calorimetry analysis (TG-DSC), fourier transform infra-red (FTIR) and scanning electron microscopy (SEM) techniques. The results show that zircon sand from PT Timah Tbk contains some of VOCs, such as ZrSiO4, ZrO2, HfO2, SiO2, Al2O3, TiO2, Fe2O3 and some REOs, such as La2O3, Y2O3, Nb2O5. The fusion temperatures varied from 600 to 800 °C which resulted in an increase of the purity of ZrO2 to 76% based on the XRF analysis. The surface area analysis and porositymeter results showed the significant change in specific surface area, pore size and pore volume of as-synthesized zirconia. The specific surface area increased dramatically from 0.28 m2/g to 173.97, 125.18, and 102.14 m2/g, at fusion temperatures of 600, 700, and 800 °C, respectively. The average particle size of as-synthesized zirconia showed the significant change from 21.31μm to 34.48 nm. The results of this work open new opportunities for the development of zirconia-based nanoparticles from the side product of tin mining.

Kajian Teknis Pengolahan SHP menggunakan Shaking Table untuk Mengoptimalkan Kadar dan Recovery Sn di TB Batu Besi PT Timah Tbk

PT Timah Tbk carried out the development by establishing TB Primer Batu Besi, East Belitung. The purpose of this study was to find out the variable setting of the shaking table in order to obtain optimal levels and recovery of Sn. The research method used is gravity concentration using a shaking table tool. The feed used is Remaining Processing Results from the primary shaking table. The experiment was carried out twice, the first experiment was carried out 27 times with a sample weight of ± 78 kg. Each experiment used 9 variations, namely the tilt of the shaking table (8°;8.5°;9°) and the stroke length (12mm, 14mm, 16mm). The second experiment used ±5 tons of material with the most optimal tool settings from the first experiment. The feed sample material and product shaking table were tested using the XRF and GCA tests. The analysis of the XRF test showed that the Sn content in the feed was 0.45%. GCA analysis shows that the associated minerals are cassiterite, ilmenite, monazite, pyrite, quartz, tourmaline, hematite and magnetite. The optimal setting for the operating variable of the shaking table is with a variation of the tilt of the shaking table 8° and a stroke length of 12 mm to obtain a concentrated Sn content of 8.04% and a concentrated Sn recovery of 20.75%. The second experiment obtained a total Sn recovery of 17.25%. If one additional SHP processing line is added to TB Batu Besi, the company's recovery will increase from ±15% to ±29.55%.

Measuring the Satisfaction Index of Bumi Rasa Program Using Survey Method: A Case Study Damar Village, East Belitung Regency

Bumi Rasa is a community empowerment program conducted by PT. Timah Tbk Primary Tin Production Unit. This community empowerment is undertaken in the Damar village, East Belitung Regency. The program consists of several programs, namely catering, stationery, traditional cakes, cleaning services, and laundry. The Bumi Rasa program has a significant impact on the economic and environmental development of the village. Therefore, this study analyzes the satisfaction level of the program using the satisfaction index survey method. This study aims to measure the satisfaction level of the recipients of the community development program. The Bumi Rasa program received a satisfaction index of 3.06 from the community, which converted to a satisfaction index of 76.67, indicating that the community is very satisfied with the program

Analysis of Capital Budgeting Green Industry in Innovative and Sustainable Post-Mining Programs in Belitung Regency

Purpose: The main purpose of this article is to evaluate the feasibility of the re-mining project of the closure tin mine area which is then processed into silica products according to export specifications, which is simultaneous with the process of environmental management of the closure mining area. Theoretical framework: Determining the capital budgeting of the project, financial indicators: Payback Period, NPV, Profitable Index, Internal Rate Return, and Return of Investment, and sensitivity Design/methodology/approach: A quantitative approach will be used to analyze the capital budgeting calculations to build a green industry through re-mining and silica refinery activities in good environmental management, not only land rehabilitation and vegetation restoration activities but post-mining activities, however synergized through creating an innovative program. Findings: Based on the results of investment calculations, the development of this green industry was declared technically and financially feasible through the management of re-mining, production of silica, and structuring the ex-mining area into a productive green area with a budget commitment that was mutually agreed upon before this activity was carried out. Research, Practical & Social implications: The post-mining tin location in Belitung Province – Indonesia, still has the potential for non-metallic mineral content, which can be re-mined and refined for silica commodities. The ex-mining area was found to be still an open area and even barren, even though PT Timah Tbk has carried out environmental restoration activities. Originality/value: In the study of capital budgeting for re-mining and silica refineries, the sensitivity of the analysis to changes in fuel costs and changes in selling prices has also been calculated.

Analiss Rasio Profitabilitas Untuk Menilai Kinerja Keuangan Pada PT. Timah Tbk Tahun 2019-2022

In other words, the profitability ratio may be used to gauge both the performance of the firm as well as its capacity to make productive use of its assets. It demonstrates the organization's capacity to earn profits. When a firm's profitability ratio is high, the total amount of profit that the company has accumulated is also high. How the calculation results of Gross Profit Margin, Net Profit Margin, Return on Assets, and Return on Equity at PT. Timah Tbk, how is the growth of financial performance at PT. Timah Tbk in terms of profitability ratios from 2019 to 2022 The wording of the research issue is how the calculation results of Gross Profit Margin, Net Profit Margin, Return on Assets, and Return on Equity at PT. Timah Tbk. The goal of this research was to identify the growth of PT. Timah Tbk in terms of profitability ratios from 2019 to 2022 by analyzing the results of calculating the Gross Profit Margin, the Net Profit Margin, the Return on Assets, and the Return on Equity at PT. Timah Tbk. This research was conducted with the intention of finding out the outcomes of these calculations. This study makes use of quantitative descriptive data as its primary source of information. This study makes use of secondary data, which includes information collected directly from the primary source (business) that serves as the research object, information obtained from the official website of the firm, and information obtained from the Indonesia Stock Exchange. The information is presented in the form of financial ratios that are taken from the financial reports that are issued at the conclusion of each period of the company's financial statements for PT. Timah Tbk, beginning with the 2019 period and continuing through the 2022 period. According to the findings of this research, the calculation of the profitability ratios of PT Timah Tbk, which is reviewed using Gross Profit Margin, Net Profit Margin, Return on Investment, and Return on Equity, experiences ups and downs (fluctuations). This indicates that the company's ability to gain profits from asset management, equity, and company revenues have decreased and increased, respectively. In terms of profitability ratios, PT. Timah Tbk has seen both growth and decline with each passing year. Therefore, the management at PT. Timah Tbk has relied on profitability ratio analysis as the foundation for their assessment of the company's overall financial performance.

Quality Improvement of Tin Ingot Product Using Six Sigma Method at PT Timah Tbk

Quality Improvement of Tin Ingot Product Using Six Sigma Method at PT Timah Tbk

Pengaruh Job Insecurity terhadap Turnover Intention pada Karyawan PT Timah (Persero) Tbk Pangkal Pinang - Bangka Belitung

The aim of this research is to find out the effect of job insecurity on turnover intention among employess of PT Timah Tbk Pangkal Pinang. The population of this study are employess of PT Timah Tbk Pangkal Pinang a sampel of 75 respondens is this study using purposive sampling method, meaning that the sample has special criteria according to researchers. The special criteria here are employees who are members division include the HR, Accounting, CSR. In this study the data collection used was primary data obtained from questionnaires which were analyzes using simple linear regression analysis techniqudes so it can be concluded that job insecurity thas significant impact on PT Timah Tbk Pangkal Pinang. 
 Keyword : Job Insecurity, Turnover Intention

Evaluasi tingkat keberhasilan reklamasi lahan bekas tambang timah di PT Timah Tbk

PT Timah Tbk has operated tin mining for ± 45 years. The ratio between disturbed land reclaimed by PT Timah Tbk indicated a bad ratio. The study aims to analyze and evaluate the land reclamation of former tin mines in Air Jangkang Sinar Rembulan Hamlet. The reclamation is important in that beneficial for the ecologycal, social and economic community. The Decree of the Minister of Energy and Mineral Resources No. 1827K/30/MEM/2018 were reformed. The evaluation was done by comparing the plan and implementationn data. Apparently, the overall reclamation were good in that of backfilling 89%, spreading of top soil 93%, erosion and sedimentation 83%, planting 90%, acid mine water 92%, header closing 100% and maintenance 82%. Canopy cover mine 90%.

The Effectiveness Of Social Return On Investment (SROI) In The Kampong AMOI Program To Enhance Community Development: A Case Study Air Limau Village, Bangka Barat

From the beginning of a company’s existence, corporate responsibility for the common good can be exercised through corporate social responsibility (CSR) programs. CSR is a company’s commitment to moral awareness in transparent and ethical behaviour through strategies and social policies that follow the values and norms applied in society. This study measures efficacy using the evaluation SROI method in the KAMPONG AMOI Community Empowerment Program (KAMPONG Agro Mandiri Integrated) conducted by PT TIMAH Tbk Metallurgical Unit Muntok. The Empowerment Program has been implemented since 2020 in Tanjung Village and Air He Limau Village in Muntok District, West Bangka Province. This research aims to comprehensively evaluate, measure, and calculate the impacts of program implementation from environmental, economic, welfare, and social perspectives using the evaluative SROI method. The study also aims to provide information on the feasibility of implementing the program via the determined SROI values. The KAMPONG AMOI Community Empowerment Program (Kampong Agro Mandiri Integration) has an SROI score of 2.82. The results show a utility or impact value of IDR 2.82 for every IDR 1 invested. The results of the SROI study show that the KAMPONG AMOI program has a positive economic, social and environmental impact. Companies should therefore support groups developing alternative feeds using readily available raw materials. To increase the value of research and development of alternative feeds using readily available raw materials, capacity building of the KAMPONG AMOI program by increasing replication of the program in vulnerable communities, and other processing such as more modern dishes and inclusive markets.