Nuisanceless oredressing additive as well as preparation method and application thereof
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An additive and ore technology, applied in crucible furnaces, electric furnaces, rotary drum furnaces, etc., can solve the problems of highly toxic cyanide pollution, high price, and high production costs, and achieve the effects of environmental protection, stable medicinal properties and high safety.
Active Publication Date: 2011-07-13
GUANGXI SENHE HIGH TECH CO LTD
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[0003] In order to solve the problem of highly toxic cyanide pollution, for decades, relevant scholars at home and abroad have launched a large number of experimental research work, trying to find cyanide-free and non-toxic mineral dressing agents. There are dozens of gold leaching agents that have been studied, such as : Thiourea method, water chlorine method, coal gold agglomeration method, thiosulfate method, lime sulfur mixture method, hypochlorit
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Embodiment 1
[0019] Embodiment 1, get 5 kilograms of yellow blood salt, 10 kilograms of sodium hydroxide, 10 kilograms of sodium carbonate, 15 kilograms of urea, after the yellow blood salt is heated to molten state first, then add sodium hydroxide, sodium carbonate, urea and comprehensively heat to 600-1000°C, after reaching the molten state, cool directly to normal temperature or put it in a mold, cool to normal temperature, demould, and get the mineral processing additives of gold oxide, silver oxide and copper oxide in block shape.
Embodiment 2
[0020] Embodiment 2, get 6 kilograms of yellow blood salt, 15 kilograms of sodium hydroxide, 20 kilograms of sodium carbonate, 25 kilograms of urea, after the yellow blood salt is heated to molten state first, then add sodium hydroxide, sodium carbonate, urea and comprehensively heat to 600-1000°C, after the material reaches a molten state, it is directly cooled to normal temperature or placed in a mold, cooled to normal temperature, and demolded to obtain block-shaped mineral processing additives of gold oxide, silver oxide and copper oxide.
Embodiment 3
[0021] Embodiment 3, get 8 kilograms of yellow blood salt, 12 kilograms of sodium hydroxide, 19 kilograms of sodium carbonate, 30 kilograms of urea, after the yellow blood salt is heated to molten state first, then add sodium hydroxide, sodium carbonate, urea and comprehensively heat to 600-1000°C, after the material reaches a molten state, it is directly cooled to normal temperature or placed in a mold, cooled to normal temperature, and demolded to obtain block-shaped mineral processing additives of gold oxide, silver oxide and copper oxide.
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Abstract
The invention relates to a low-toxicity and environmentally friendly gold and silver oredressing additive as well as a preparation method and application thereof. The main raw materials of the additive comprise sodium hydroxide, sodium carbonate, urea and potassium ferrocyanide. The preparation method comprises the following steps of: heating the sodium hydroxide, the sodium carbonate, the urea and the potassium ferrocyanide to 600-1,000 DEG C, and after the materials reach a molten state, continuing to preserve heat for 1-2 hours; directly cooling to normal temperature; and demoulding to obtain a nubby gold and silver oredressing additive. The product of the invention can be widely applied to producing noble metal mines, such as soaking, core spraying, and the like of gold oxide mines, silver oxide mines, copper oxide mines, and also can be used for industrial production industries of electroplating, and the like for replacing highly toxic sodium cyanide chemicals. Compared with other non-toxic sodium cyanide drugs, the additive provided by the invention has the advantages of good effect, stable drug properties, environmental friendliness, lower cost, and the like.
Description
technical field [0001] The invention relates to a beneficiation additive, in particular a beneficiation additive with low toxicity and environmental protection, aimed at precious metals such as gold oxide, silver oxide ore, copper oxide ore, and a preparation method and application thereof. Background technique [0002] Precious metals such as gold, silver and copper are valuable resources. The trend of gold, silver and copper mining in the world is that rich ore and easy-to-handle ore are decreasing or exhausted, and complex ore, refractory ore and lean ore have become the main resources for gold and silver ore production. According to reports, there are very few rich ores in the world at present, and more than 2 / 3 of them are refractory ores. Therefore, in the past two centuries, the research on refractory ores, especially the research on pretreatment methods and processes of refractory ores, and the research on the comprehensive recovery technology of complex ores has be...
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