种由硫酸处理黑钨矿制备钨酸盐溶液的方法

• Format: Patent
• Language: Chinese
• Published: 13.11.2018
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; FERROUS OR NON-FERROUS ALLOYS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF ALLOYS OR NON-FERROUS METALS

种硫酸处理黑钨矿制备钨酸盐溶液的方法，包括以下步骤：黑钨矿转型，配制定质量浓度的硫酸溶液，控制适当的液固比和温度，将定粒度的黑钨矿加入该硫酸溶液中进行转型反应，反应结束后过滤，得到转型滤液和转型物料；转型物料溶出，配制定浓度的铵盐或钠盐溶液，控制适当的液固比和温度，将上述转型物料与此铵盐或钠盐溶液混合反应，反应定时间后，过滤得到钨酸铵溶液或者钨酸钠溶液；转型滤液处理，向转型滤液中加入理论量的铵盐，使溶液表面出现晶膜，静置冷却至硫酸亚铁铵晶体完全结晶析出，减压过滤，得到硫酸亚铁铵晶体，结晶母液中补入硫酸后返回处理黑钨矿。本发明无污染物排放、生产成本低、能耗少、操作方便、易于产业化。 The invention discloses a method for preparing a tungstate solution by means of treating wolframine by using sulfuric acid. The method comprises the following steps: transforming the wolframine, namely preparing a sulfuric acid solution which has a certain mass concentration, controlling the solution to have a proper liquid to solid ratio and a proper temperature, adding the wolframine which has a certain particle size into the sulfuric acid solution to perform transformation reaction, and filtering after the reaction is ended to obtain transformation filtrate and a transformed material; dissolving out the transformed material, preparing an ammonium salt or sodium salt solution which has a certain concentration, controll