A kind of low alkali consumption scheelite collector and its application

Abstract

The invention provides a scheelite collecting agent. The scheelite collecting agent is characterized by being produced mainly through the steps of 1, heating and stirring by-products of commercial grease and then adding sulfuric acid with the mass being 10-15% of the mass of the by-products of the commercial grease, wherein the concentration of the sulfuric acid is 25-35%; 2, keeping stirring and removing impurities in a lower layer after standing and layering; 3, guiding chlorine gas into a reaction system, continuously stirring and adding inorganic strong-alkali solutions to neutralize the reaction system; 4, adding surface activation agents with the mass being 3-5% of the total mass of the system into the system, adding inorganic strong-alkali solutions with the mass being 10-15% of the mass of the by-products of the commercial grease into the system after uniform stirring and keeping stirring; and 5, adding water for diluting reaction until the mass fraction is 1-10% to obtain the collecting agent. The by-products of the commercial grease are industrial by-products formed by processing and extracting edible fat and oil and mainly comprise oil, saponin, polyacid, deodorized distillates and sebacic acid. The invention further provides a method for scheelite beneficiation through the scheelite collecting agent.

Description

technical field [0001] The invention relates to the field of mineral processing, in particular to a low alkali consumption scheelite collector and its application. Background technique [0002] As a non-renewable resource, tungsten has a wide range of uses in industrial production. However, after long-term mining, wolframite resources are becoming increasingly exhausted, and scheelite has gradually replaced wolframite as the main tungsten mining mineral. At present, the separation of scheelite mainly adopts the flotation process. The most typical process uses sodium carbonate (or sodium hydroxide + sodium carbonate) as the regulator, sodium silicate as the inhibitor, and fatty acid as the collector. Rough separation and two sweeping processes are used to float scheelite crude concentrate, and then use Petroff method to heat and concentrate to obtain salable scheelite concentrate. Most domestic scheelite processing plants adopt this type of process. However, most fatty acid...

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Problems solved by technology

[0010] The current problem is that sodium carbonate is a powder, and it is difficult to add it directly. The dust in the configuration is too large, and the solubility of sodium carbonate is related to temperature. When the ambient temperature is high, the solubility is high, and the concentration can be configured at 10-25 %, the concentrator generally configures a concentration of 20%. When the ambient temperature is low, even if the concentration is reduced to about 10% by using hot water, the slurry flows into the slurry through the pipeline. Due to the decrease in the ambient temperature, sodium carbonate crystals are precipitated, resulting in blockage of the pipeline. The amount of sodium carbonate is reduced, the commonly used collectors for scheelite are affected by calcium and magnesium ions, and the selection index is extremely unstable

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