Boron Ores Research Articles

Application of the radiography method of biogeochemical prospecting for boron ore deposits

The paper describes the use of the (n, α)-radiography technique for biogeochemical sampling of dispersed boron haloes. The research was carried out in skarn deposit. The leaves of the dominant kinds of plants possessing high physiological barriers relative to boron were chosen as objects for research. The data obtained through the radiography technique have been found to correlate with the data of the lithologeochemical method. It has also been found that the radiography technique can greatly increase the effectiveness of biogeochemical prospecting for boron ores.

Development of a new method to produce melts suitable for the production of amorphous Fe−Si−B materials

Research work was performed on the development of a new reduction process for the melting and refining of boron containing alloys used in the production of amorphous material for transformer cores. Based on fundamental thermodynamics principles, a reduction refining process was developed which employs conventional steelmaking vessels for using steel scrap, ferro alloys, and boron ores to produce an Fe−Si−B alloy. The process can eliminate the need for ferro boron alloy, high purity iron, and remelt stock to produce the Fe−Si−B alloy. Process variables were established which show the effects of mixing time, reductant alloy additions, slag chemistry, and temperature on the reduction kinetics. Final melt chemistries have lower levels of sulfur, nitrogen, and other tramp elements than conventional methods for producing the Fe−Si−B melt.

Use of the (α, n) reaction for the quantitative determination of the beryllium, boron and fluorine content of concentration products

A rapid method for the quantitative analysis of the beryllium, boron and fluorine contents in concentration products, based on the use of the (α,n) reaction, is described. Po210 with an activity of 250 μ Cwas used as the α-radiation source. The number of neutrons in the concentration products knocked out by α-particles is recorded by a neutron counter and serves as a measure of the beryllium, boron, and fluorine content in the product analyzed. The method makes it possible to check the concentration products of beryllium, fluorite and boron ores, and also rich ores containing fluorine and boron, with an accuracy up to 1.5–2%. The content of the element checked can be determined in the presence of a constant amount of admixtures of other elements with a high(α,n) reaction yield.

Use of (α,n) reactions in quantitative assays of dressing products for beryllium, boron and fluorine

Descriptions are given of the rapid method using ( alpha ,n) reactions for quantitative control of beryllium, boron, and fluorine content in dressing products. Po/sup 210/ with an activity of 250 mu c was used as alpha source. The number of neutrons knocked out by alpha particles from enriched products is recorded by neutron counters and the amount of beryllium, boron, and fluorine concentration in the product is determined. The method can be utilized for recording (with an accuracy of 1.5 to 2%) the enrichment products of beryllium, fluorine, and boron ores, and, also, rich ores containing fluorine and boron. The content of the element is determined with a constant amount of other admixtures with high ( alpha ,n) reaction yield. (tr-auth)