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Beneficiation method for ultrafine fraction cassiterite

A beneficiation method and fine particle technology, applied in chemical instruments and methods, flotation, wet separation, etc., can solve the problems of low recovery rate, high production cost, low grade, etc., and achieve enhanced recovery, improved recovery, and enhanced hydrophobicity. sexual effect

Inactive Publication Date: 2012-08-15
GUANGZHOU RES INST OF NON FERROUS METALS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a fine-grained cassiterite with a mud content of 10-30% for the shortcomings of the existing fine-grained cassiterite beneficiation method with high mud content, such as low recovery rate, high production cost, and low grade. The beneficiation method of high-grade cassiterite

Method used

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  • Beneficiation method for ultrafine fraction cassiterite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The ore feed is cassiterite polymetallic sulfide ore in a certain place in Yunnan, China. After grading by FX200 cyclone, the tin grade of -0.043mm particle size is 0.963%.

[0028] The FX75 cyclone is used for desliming operation, and the desliming tailings with a yield of 26.12% and the cyclone grit are obtained; after the cyclone is gritted, water is added to adjust the slurry to a pulp concentration of 26%, and the weight of the ore is added. Collecting agent xanthate 300g / t, foaming agent No. 2 oil 30g / t, remove sulfide ore operation, obtain sulfide ore and desulfurization tailings with a yield of 4.67%; 0.15T to obtain iron concentrate and iron-removing tailings with a yield of 12.88% and a grade of 60.57%. Concentrate the iron-removing tailings to a pulp concentration of 24%, add the regulator sodium carbonate 200g / t, and stir for 2 minutes; sodium hexametaphosphate 100g / t, stirring for 2 minutes; auxiliary collector tributyl phosphate 80g / t, stirring for 10 minu...

Embodiment 2

[0030] The ore feed is the beneficiation tailings of a tin-containing polymetallic sulfide ore in Yunxi, the tin grade is 0.71%, the -0.043mm particle size accounts for 71%, and the tin occupation rate reaches 91%.

[0031]The desliming operation adopts FX125 cyclone to obtain deslimed tailings and cyclone sand settling with a yield of 19.76%;

[0032] Add water to the hydrocyclone to adjust the slurry to a pulp concentration of 25%, add collector butyl xanthate 200g / t, foaming agent No. 2 oil 50g / t, and remove sulfide ore according to the weight of ore feed. Sulfide ore and desulfurized tailings with a yield of 2.97%; the desulfurized tailings are subjected to magnetic separation to remove iron, and the magnetic field strength is 0.3T to obtain iron concentrates and iron-removed tailings with a yield of 5.97% and a grade of 56.71%. After concentrating and adjusting the slurry to a pulp concentration of 27%, add the regulator sodium carbonate 350g / t and stir for 3 minutes; car...

Embodiment 3

[0034] The ore feed is the old tailings of a tin concentrator in Guangxi, China. The tin grade is 1.13%, the -0.043mm particle size accounts for 57%, and the tin share is 72%.

[0035] The FX100 cyclone is used for desliming operation, and the desilting tailings with a yield of 15.76% and the cyclone grit are obtained; after the cyclone grit is added with water to adjust the pulp concentration to 22%, according to the weight of the ore, add the catch Collecting agent xanthate 300g / t, foaming agent No. 2 oil 40g / t, carry out sulfide ore removal operation, obtain sulfide ore and desulfurization tailings with a yield of 2.97%; desulfurization tailings are subjected to magnetic separation and iron removal operations, magnetic Strength 0.2T, yield 7.97%, grade 61.65% iron concentrate and iron-removing tailings; iron-removing tailings are concentrated and adjusted to a pulp concentration of 23%, add regulator sodium carbonate 400g / t, and stir for 3 minutes ; sodium hexametaphosphate...

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Abstract

A beneficiation method for ultrafine fraction cassiterite is characterized in that a swirler is used for desliming to obtain swirler settled sand and deslimed tailings; sulfide ores are separated from the swirler settled sand so that the sulfide ores and desulfurized tailings are obtained; iron is removed from the desulfurized tailings by means of magnetic separation to obtain iron ore concentrate and deironed tailings; flotation tin concentrate and flotation tailings are obtained after secondary roughing flotation, secondary scavenging flotation and tertiary blank concentration flotation for the deironed tailings; and a table concentrator is used for performing gravity concentration for the flotation tin concentrate to obtain tin concentrate, tin middlings and table concentration tailings. The grade of the tin concentrate is higher than 40%, the tin recovery rate of the tin concentrate is higher than 50%, the grade of the tin middlings ranges from 1% to 3%, the tin recovery rate of the tin middlings is higher than 15%, and the overall tin recovery rate of the tin concentrate and the tin middlings is higher than 65%. The beneficiation method for the ultrafine fraction cassiterite is high in recovery rate, low in production cost, high in tin grade and applicable to recovery of the ultrafine fraction cassiterite with the silt content ranging from 10% to 30%.

Description

technical field [0001] The invention relates to a method for beneficiating cassiterite, in particular to a method for beneficiating fine-grained cassiterite with high mud content. Background technique [0002] Tin ore is a brittle and fragile mineral. During the mining and transportation process, or the crushing and grinding process that must be passed through the beneficiation process, a large number of fine-grained tin ore with a particle size of <0.043mm will inevitably be produced. The grade of this part of fine-grained cassiterite is less than 1.5%. Although the grade is not low, it is very difficult to recover this part of cassiterite due to the special properties of fine-grained cassiterite. [0003] Due to the long-term large-scale tin ore mining, the selected grade of tin ore in my country has been declining year by year. It is the general trend to mine low-grade tin ore with fine particle size. Part of the fine-grained cassiterite has not been well recovered, an...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03D1/00B03D1/014B03D1/018B03D101/02B03D101/06
Inventor 邱显扬胡真李汉文汤玉和何庆浪叶富兴童雄邹坚坚王成行汪泰叶小璐
Owner GUANGZHOU RES INST OF NON FERROUS METALS
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