Beneficiation reagent, synthesis method and method for comprehensively utilizing generated waste gases
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A kind of beneficiation agent and agent technology, which is applied in the field of precious metal extraction, can solve the problems of low utilization rate of backwater, high comprehensive cost, unsafety, etc.
Active Publication Date: 2013-11-27
YUNNAN KEENLY NEW MATERIAL
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However, cyanide is very unsafe during transportation, storage and operation, endangers the health of workers, and seriously pollutes the environment. The cyanide-containing waste salt wastewat
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Embodiment 6
[0054] Embodiment 6: In parts by weight, 500 parts of ammonium chloride, 40 parts of strong alkali, 360 parts of urea, 650 parts of sodium carbonate, 500 parts of yellow blood salt potassium, 10 parts of potassium sulfide, 50 parts of lime nitrogen, 100 parts of carbon, cyanic acid The mixture of 100 parts of sodium is added into the reaction kettle, heated rapidly to 500-900°C, and then reacted at this temperature for half an hour, and the product is obtained after cooling down. Then use this product to carry out immersion gold test, and the test results are shown in Table 1.
Embodiment 7
[0055] Embodiment 7: In parts by weight, 700 parts of ammonium chloride, 80 parts of strong alkali, 500 parts of urea, 650 parts of sodium carbonate, 50 parts of yellow blood salt potassium, 5 parts of potassium sulfide, and 100 parts of sodium cyanate are added to the reaction kettle. Rapidly heat up to 500-800°C, then react at this temperature for half an hour, and obtain the product after cooling down. Then use this product to carry out immersion gold test, and the test results are shown in Table 1.
Embodiment 8
[0056] Embodiment 8: In parts by weight, 700 parts of ammonium chloride, 160 parts of strong alkali, 700 parts of urea, 650 parts of sodium carbonate, 500 parts of yellow blood salt potassium, 10 parts of potassium sulfide, 50 parts of lime nitrogen, 100 parts of carbon, cyanic acid Add the mixture of 300 parts of sodium into the reaction kettle, heat it rapidly to 500-1000°C, then react at this temperature for half an hour, and get the product after cooling down. Then use this product to carry out immersion gold test, and the test results are shown in Table 1.
[0057] From the test data of each example in Table 4 below, it is shown that the medicament has a complex composition capable of leaching gold, wherein cyanide plays an auxiliary role in leaching. After the gold leaching is completed, the residual amount of cyanide in the wastewater is small, which is harmful to the environment and operation. , transportation, etc., and finally can obtain good economic and environme...
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Abstract
The invention discloses a beneficiation reagent, a synthesis method and a method for comprehensively utilizing generated waste gases. The beneficiation reagent is formed by solid-phase synthesis of inorganic or organic raw materials and comprises the following raw materials in parts by weight: 300 to 700 parts of a nitrogen-containing compound, 500 to 800 parts of chlorine salt, 400 to 650 parts of carbonate, 80 to 160 parts of strong alkali, 50 to 500 parts of cyanide complex double salt, 0 to 300 parts of cyanate, 5 to 20 parts of potassium sulfide, 50 to 200 parts of carbon and 0 to 100 parts of lime nitrogen. The beneficiation reagent is prepared by the following steps: mixing the raw materials uniformly; adding the mixed raw materials into a reaction kettle; quickly heating to 500 to 1,200 DEG C; maintaining high temperature for 1 to 2 hours; and cooling and crushing to obtain the product. Ammonia gas and carbon dioxide generated in a synthesis process are absorbed by a sodium sulfate solution to generate byproducts sodium carbonate and ammonium sulfate. The invention has the advantages of low production cost, simple operation, low toxicity and easy control. The product can be widely applied to leaching of noble metals such as gold oxide ores and silver oxide ores, floatation inhibitors and metal heat treatment and electroplating industries.
Description
technical field [0001] The invention relates to an ore dressing agent, a synthesis method and a method for comprehensive utilization of waste gas generated. The ore dressing agent has the characteristics of low toxicity and environmental protection, and is especially suitable for extracting precious metals such as oxidized gold ore and silver oxidized ore. Background technique [0002] At present, in the field of precious metal dressing, smelting and processing, the methods for treating oxidized gold ore and silver oxide ore include cyanide method, flotation method, coal gold agglomeration method, thiourea method, thiosulfate method, lime sulfur mixture method, water chlorine method, etc. method, hypochlorite method, etc. For oxidized gold ore and silver oxide ore, the cyanidation method is the most mature, its process is relatively simple, its adaptability to ore is strong, its recovery rate is high, and its production cost is low. However, cyanide is very unsafe during tr...
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