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1. 发明授权

US06696037B1 Method of recovering sulfur from minerals and other sulfur-containing compounds 失效
标题翻译：从矿物质和其他含硫化合物中回收硫的方法
公开(公告)号：US06696037B1
公开(公告)日：2004-02-24
申请号：US09676513
申请日：2000-10-02
申请人： Yoshiyuki Watanabe , Toyohisa Fujita , Kaoru Saruta
发明人： Yoshiyuki Watanabe , Toyohisa Fujita , Kaoru Saruta
IPC分类号： C01B1700
CPC分类号： C01B17/027 , C01B17/0226 , C22B3/08 , C22B19/22 , C22B19/26 , Y02P10/214 , Y02P10/234
摘要： A sulfurous compound such as a sulfur-rich “float” (concentrate) obtained by flotation of the residue from the leaching of a zinc concentrate is heated at a temperature not lower than the melting point of sulfur but below its boiling point, preferably not higher than 200° C., more preferably not higher than 140° C., and the evolving gas containing sulfur vapor is cooled at a temperature less than the melting point of sulfur, preferably at ordinary temperature, to condense sulfur.
摘要翻译：通过将浸出锌精矿的残渣浮选而获得的富硫“漂浮”（浓缩物）的亚硫酸化合物在不低于硫的熔点但低于其沸点的温度下加热，优选不高于优选不高于140℃，并且含有硫蒸汽的放出气体在低于硫的熔点的温度下被冷却，优选在常温下冷凝以使硫浓缩。

2. 发明授权

US06835230B2 Method for leaching zinc concentrate 失效
标题翻译：锌精矿浸出方法
公开(公告)号：US06835230B2
公开(公告)日：2004-12-28
申请号：US10058438
申请日：2002-01-28
申请人： Manabu Kanno , Yoshiyuki Watanabe , Kaoru Saruta , Akira Narumi
发明人： Manabu Kanno , Yoshiyuki Watanabe , Kaoru Saruta , Akira Narumi
IPC分类号： C22B308
CPC分类号： C22B3/08 , C22B19/22 , Y02P10/234
摘要： A method of leaching zinc from a zinc concentrate comprising leaching a zinc concentrate in an aqueous solution containing free sulfuric acid and ferric ions, whereby elemental sulfur is deposited on the zinc concentrate, and grinding the zinc concentrate under atmospheric pressure in the aqueous solution to provide particles of the zinc concentrate having surfaces, wherein the elemental sulfur and other by-products which form on the surfaces of the particles of the zinc concentrate are stripped by the grinding.
摘要翻译：一种从锌精矿浸出锌的方法，包括将锌精矿浸入含有游离硫酸和铁离子的水溶液中，由此将元素硫沉积在锌精矿上，并在大气压下在该水溶液中研磨锌精矿以提供具有表面的锌精矿的颗粒，其中通过研磨剥离在锌浓缩物的颗粒表面上形成的元素硫和其它副产物。

3. 发明授权

US06475450B1 Method of leaching zinc concentrate 失效
标题翻译：锌精矿浸出方法
公开(公告)号：US06475450B1
公开(公告)日：2002-11-05
申请号：US09693360
申请日：2000-10-20
申请人： Kaoru Saruta , Norihito Ishimori , Hitoshi Masuda
发明人： Kaoru Saruta , Norihito Ishimori , Hitoshi Masuda
IPC分类号： C22B1900
CPC分类号： C22B19/26 , C22B3/08 , C22B19/22 , Y02P10/234
摘要： A method for directly leaching a zinc concentrate in one of the stages contained in the hydrometallurgical process for the production of electrolytic zinc. The method comprises: a neutral leach step, a zinc concentrate leach step, and an iron oxidation step. In the zinc concentrate leach step, a neutral leach residue and an iron sediment returned from the iron oxidation step are repulped by the spent electrolyte followed by adding thereto zinc concentrate to extract zinc from the zinc concentrate by carrying out a leaching under atmospheric pressure and at a temperature of not lower than 90° C., but not higher than the boiling point of the solution. According to this method, the concentration of Fe(III) ions in the zinc concentrate leach solution is significantly increased. Due to this Fe(III) ion concentration, the leaching rate of the zinc concentrate is enhanced.
摘要翻译：一种在用于生产电解锌的湿法冶金工艺中包含的一个阶段中直接浸提锌精矿的方法。该方法包括：中性浸出步骤，锌精矿浸出步骤和铁氧化步骤。在锌精矿浸出步骤中，从铁氧化步骤返回的中性浸出残渣和铁沉淀物被废电解质再次压制，然后向其中加入锌精矿以从锌精矿中提取锌，在大气压下进行浸出温度不低于90℃，但不高于溶液的沸点。根据该方法，锌精矿浸出液中Fe（III）离子浓度显着增加。由于这种Fe（III）离子浓度，锌精矿的浸出率提高。

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