Extraction of Phosphorous from a Phosphorous-Containing Vanadium Titano-Magnetite Tailings by Direct Flotation

Junhui Xiao,Tao Chen,Yang Peng,Kai Zou,Wei Ding,Chao Chen

doi:10.3390/pr8070874

Abstract

In this study, there is 1.42% P2O5 in the P-containing V-Ti magnetite tailings in Miyi Region of China, with the valuable minerals mainly including apatite, and aluminosilicate minerals as the main gangue components. The direction flotation process was used to recover phosphorous from the low-grade phosphorous-bearing V-Ti magnetite tailings. The results showed that an optimized phosphorous concentrate with a P2O5 grade of 31.35% and P2O5 recovery of 88.02% was obtained by flotation process of one roughing, three scavengings, and three cleanings under roughing conditions, which employed pulp pH of 9, grinding fineness of <0.039 mm occupying 90%, flotation concentration of 25%, and dosages of carboxymethylcellulose, oxidized paraffin wax soap, and pine oil of 400 g/t, 300 g/t, and 20 g/t, respectively. Optimized one scavenging, two scavenging, and three scavenging conditions used a pulp pH of 9, and dosages of carboxymethylcellulose, oxidized paraffin wax soap, and pine oil of 200 g/t, 150 g/t, 10 g/t; 100 g/t, 75 g/t, and 5 g/t; and 100 g/t, 75 g/t, and 5 g/t, respectively. Optimized one cleaning, two cleaning, and three cleaning condition dosages of carboxymethylcellulose of 100 g/t, 50 g/t, and 25 g/t, respectively. Study of analysis and characterization of phosphorous concentrate by X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS) show that most gangue minerals enter the flotation tailings, the main minerals in phosphorous concentrate are apatite, olivine, and feldspar.

Highlights

Phosphorus is an important non-metallic mineral resource, which is widely used in agriculture, chemical industry, medicine, food, and other industrial sectors
Hydroxyl oxime benzyl arsenic acid contain a toxic element and have strong foaming performance, in the process arsenic acid and benzyl arsenic acid contain a toxic element and have strong foaming performance, of flotation test, we found that when the flotation foam is bigger with more viscosity, the water content in the process of flotation test, we found that when the flotation foam is bigger with more is high, which eventually led to the foam product of phosphorus grade and recovery index was not viscosity, the water content is high, which eventually led to the foam product of phosphorus grade ideal [20,21,22]
Oxidized paraffin is suitable as a flotation collector

Summary

Introduction

Phosphorus is an important non-metallic mineral resource, which is widely used in agriculture, chemical industry, medicine, food, and other industrial sectors. The global phosphate mineral resources are very rich, but the distribution is extremely uneven, among which the phosphate mineral reserves in Morocco and Western Sahara, China, and Syria account for more than 80% of the total proved phosphorus reserves in the world. According to the statistical data of the international fertilizer organization, it was concluded that the decline in the global raw ore quality leads to the continuous decline in the proportion of the world0 s. P2 O5 grade to more than 32% of the high-quality commodity phosphate ore. P2 O5 grade has been an important supply source of phosphorus around the world in recent years.

Methods

Results

Conclusion