Leaching solution and leaching process of zinc
A leaching solution and leaching technology, which is applied in the field of zinc leaching solution and leaching technology, can solve the problems of insufficient zinc extraction rate, low preparation efficiency, and low zinc purity, and achieve easy separation and preparation, convenient refining, and high efficiency The effect of preparation
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Embodiment 1
[0020] 1) After crushing the zinc concentrate, add the zinc leaching solution. The zinc content in the zinc concentrate is 43.2% by mass percentage. The solid-to-liquid ratio g:L of zinc concentrate and zinc leaching solution is 2:5.6; leaching is carried out under stirring conditions while electrochemical reduction is carried out. The voltage of electrochemical reduction is 15 V and the current is 50 A. The electrode used It is a tungsten electrode; the leaching temperature is 80°C, and the leaching time is 2h; the leaching solution of zinc is characterized in that, it is composed of water and the following raw materials by weight: 35.2 parts of ferric chloride, 54.7 parts of sodium chloride, chlorine 5.1 parts of yttrium chloride, 5.2 parts of hydrochloric acid;
[0021] 2) Add 0.61% zinc powder of zinc concentrate quality, filter to obtain filtrate X1 and filter residue Y1; filtrate X1 is evaporated and crystallized to obtain zinc chloride, and the evaporated steam is conde...
Embodiment 2
[0024] 1) After crushing the zinc concentrate, add the zinc leaching solution. The zinc content in the zinc concentrate is 43.2% by mass percentage. The solid-to-liquid ratio g: L of zinc concentrate and zinc leaching solution is 2:5; leaching is carried out under stirring conditions and electrochemical reduction is carried out at the same time. The voltage of electrochemical reduction is 15V and the current is 30A. The electrodes used are Tungsten electrode; the leaching temperature is 85°C, and the leaching time is 2.5h; the leaching solution of zinc is characterized in that it consists of water and the following raw materials by weight: 33.2 parts of ferric chloride, 55.7 parts of sodium chloride, chlorine 5.4 parts of yttrium chloride, 5.7 parts of hydrochloric acid;
[0025] 2) Add zinc powder of 1% of the quality of zinc concentrate, filter to obtain filtrate X1 and filter residue Y1; filtrate X1 is evaporated and crystallized to obtain zinc chloride, and the evaporated ...
Embodiment 3
[0028] 1) After crushing the zinc concentrate, add the zinc leaching solution. The zinc content in the zinc concentrate is 43.2% by mass percentage. The solid-to-liquid ratio g: L of zinc concentrate and zinc leaching solution is 2:6; leaching is carried out under stirring conditions while electrochemical reduction is carried out. The voltage of electrochemical reduction is 25 V and the current is 70 A. The electrode used It is a tungsten electrode; the leaching temperature is 80°C, and the leaching time is 2 h; the leaching solution of zinc is characterized in that it consists of water and the following raw materials by weight: 37.6 parts of ferric chloride, 51.8 parts of sodium chloride, 4.7 parts of yttrium chloride, 4.7 parts of hydrochloric acid;
[0029] 2) Add 0.5% zinc powder of zinc concentrate quality, filter to obtain filtrate X1 and filter residue Y1; filtrate X1 is evaporated and crystallized to obtain zinc chloride, and the evaporated steam is condensed and retur...
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Abstract
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