Method for extraction of beryllium from the minerals of genthelvite group when processing the raw minerals (ores, concentrates)
The invention relates to non-ferrous metallurgy and is used for extracting beryllium from genthelvites when processing the raw minerals (ores, concentrates) by heap and vat leaching. The objective of the invention is to disclose a method of leaching beryllium from danalite (Fe 8 (BeSiO 4 )6S 2 ), genthelvite (Zn 8 (BeSiO 4 )6S 2 ), and helvite (Mg 8 (BeSiO 4 )6S 2 ), thus expanding the range of raw minerals used for processing and providing more economical production and improved environmental impact via use of an effective reagent at low temperatures by hydrochemical method. The offered method is beneficial both economically and ecologically, as the alternate modern pyrometallurgical method of beryllium extraction has the following drawbacks: emission of toxic gases, high energy requirements, and use of the fireproof materials. The newly developed method is recommended as a basis for the innovative technology of beryllium extraction from genthelvite concentrates and ores.
1. A process for extraction of beryllium from beryllium-containing raw minerals or beryllium-containing material, comprising:
first, contacting the beryllium-containing raw minerals or material with a leaching solution, comprising technical grade hydrochloric acid, and second, extraction of beryllium, comprising the use of technical grade hydrochloric acid as a solvent in quantities of 0.8%-8% by weight per liter of leaching solution and heating at 80° C. for one (1) hour, to solubilize said raw minerals or material.
2. The process of claim 1 , wherein the leaching solution further comprises a hydrochloric acid to water concentration ratio of 1:3.
3. The process of claim 1 , wherein the beryllium-containing mineral is danalite, genthelvite or helvite.
4. A process for extraction of beryllium during processing of beryllium-containing raw minerals or material, comprising: contacting the beryllium-containing raw minerals or material with leaching solution, comprising water, potassium chlorate, and technical grade hydrochloric acid, and heating said minerals or material with said solution together for a period of one (1) hour.
5. The process of claim 4 , wherein the leaching solution is comprised of technical grade hydrochloric acid in quantities of 0.8%-8.0% by weight per liter of total leaching solution.
6. The process of claim 4 , further comprising a heating temperature of 80° C.
7. The process of claim 4 , wherein the beryllium-containing mineral is danalite, genthelvite, or helvite.