Mineral separation method for replacing sodium cyanide during bismuth concentration
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A beneficiation method and sodium cyanide technology, which is applied in the field of bismuth beneficiation, can solve problems such as complex operation process, large safety hazards, and excessive sodium cyanide, and achieve the effects of improving the beneficiation index, improving safety, and improving the selected grade
Active Publication Date: 2019-01-18
HUNAN SHIZHUYUAN NON FERROUS METAL
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[0003] The present invention provides a kind of beneficiation method of bismuth beneficiation instead of sodium cyanide, which can effectively solve the problem that sodium cyanide has strong toxicity, complex operation process, great potential safety hazards, and the required cyanide The amount of sodium chloride is large, wasting resources, increasing costs and other issues
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Embodiment 1
[0031] Embodiment 1: as figure 1 and figure 2 Shown, bismuth selects a kind of beneficiation method that replaces sodium cyanide, comprises the following steps:
[0032] S1. Flotation: adopt the new branch series flow flotation process, divert the foam product of bismuth desiliconization and sweeping to the thick mud bucket of bismuth desulfurization for drug removal, and float together with the original desulfurized ore;
[0033] S2, shunting: shunting the foam products swept in the later stage of flotation, so as to carry out bismuth desulfurization operation;
[0034] S3. Measurement: measure the selected grade of the diverted foam;
[0035] S4. Stirring: the slurry foam is introduced into the stirring device and stirred by a high-speed stirrer;
[0036] S5, drug removal: add bleaching powder and ethyl disulfide to the treated pulp;
[0037] S6. Tailings treatment: the tailings after flotation are adjusted to neutrality by clear water, and the waste water is passed int...
Embodiment 2
[0052] Embodiment 2: a kind of beneficiation method of bismuth beneficiation instead of sodium cyanide comprises the following steps:
[0053] S1. Flotation: adopt the new branch series flow flotation process, divert the foam product of bismuth desiliconization and sweeping to the thick mud bucket of bismuth desulfurization for drug removal, and float together with the original desulfurized ore;
[0054] S2, shunting: shunting the foam products swept in the later stage of flotation, so as to carry out bismuth desulfurization operation;
[0055] S3. Measurement: measure the selected grade of the diverted foam;
[0056] S4. Stirring: the slurry foam is introduced into the stirring device and stirred by a high-speed stirrer;
[0057] S5, drug removal: adding activated carbon and ethylsulfide nitrogen to the treated pulp;
[0058] S6. Tailings treatment: the tailings after flotation are adjusted to neutrality by clear water, and the waste water is passed into lime for neutralizati...
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Abstract
The invention discloses a mineral separation method for replacing sodium cyanide during bismuth concentration. The method comprises the following steps of 1, flotation, wherein a branch series flow flotation novel technology is adopted, a foam product obtained after bismuth silicon removal scavenging and original desulfurated mine are subjected to flotation together; S2, flow division, wherein foams obtained after scavenging at the later period of flotation are subjected to flow division; S3, measurement, wherein the selected grades of the foams obtained after flow division are measured; S4, stirring, wherein pulp foams are introduced into a stirring device for performing stirring work through a high speed stirrer; S5, reagent removal, wherein bleaching powder and ethyl thio carbamate areadded into the treated pulp; S6, tailing treatment, wherein tailings obtained after flotation is adjusted through clean water to be neutral, and wastewater is introduced into lime for performing neutralizing. The method is scientific, reasonable and safe and convenient to use; bleaching powder and ethyl thio carbamate are added into the reagent removal process, sodium cyanide replied on in siliconremoval work in bismuth concentration work is replaced, flotation reagent consumption is lowered, a separation index is increased, and potential safety hazards caused by sodium cyanide leakage are reduced.
Description
technical field [0001] The invention relates to the technical field of bismuth beneficiation, in particular to a beneficiation method of bismuth beneficiation instead of sodium cyanide. Background technique [0002] At present, the company's bismuth beneficiation operations are mainly desiliconization operations and rely on sodium cyanide, while desulphurization operations do not need to be added in most cases. medicine, there will always be a small part of bismuth with poor floatability, which makes the separation of bismuth and sulfur difficult. The separation is relatively good, so the foam scraped out in the early stage is of high grade and low in sulfur content. Part of it is distributed into the final concentrate, so sodium cyanide suppression is needed. The longer the flotation time, the more sodium cyanide needs to be added. Just like the phenomenon in production, the smaller the ore flow rate, the more sodium cyanide needs to be added. The more, because sodium cya...
Claims
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