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A kind of method of reclaiming fine-grained cassiterite

A technology of fine particles and cassiterite, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problem of hindering the interaction between chemicals and minerals, affecting concentrate grade and recovery rate, and increasing flotation machine pressure, etc. problems, to achieve the effect of increasing the difficulty of flotation, improving the grade and operation recovery rate, and reducing the impact

Active Publication Date: 2021-03-12
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existence of fine mud in the flotation process directly affects the effect of flotation. The existence of fine mud not only increases the cost of reagents, hinders the interaction between reagents and minerals, but also increases the pressure of the flotation machine, directly affecting the concentration of concentrates. grade and recovery
[0004] At present, cassiterite collectors are mainly divided into fatty acids and hydroxamic acids. Fatty acid collectors are mainly used for the flotation of tin ores with relatively simple mineral composition and quartz as the main gangue, and need to be adjusted appropriately Hydroxamic acid collectors have good selectivity and strong collection ability, but the cost is high

Method used

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  • A kind of method of reclaiming fine-grained cassiterite

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Embodiment 1

[0028] Embodiment 1: In this embodiment, the mixed sulfur collector is made from the following components by mass: sodium alkyl sulfonate 60g, CuSO 4 40g, 60g sodium alkylsulfonate, 40g CuSO 4 The mixed sulfur collector is obtained by mixing uniformly in parts by mass.

[0029] The tin mixed collector of the present embodiment is made from the following components by mass: salicylic hydroxamic acid 20g, benzohydroxamic acid 60g, oleic acid 20g; 20g of oleic acid was mixed uniformly to obtain a tin mixed collector.

[0030] Use the mixed sulfur collector and tin mixed collector prepared in this example to process a certain fine-grained cassiterite in Wenshan, Yunnan. The raw ore tin grade is 0.119%, such as figure 1 As shown, the specific steps are as follows:

[0031] (1) Slurry the raw ore until the pulp concentration is 38%. Calculated per ton of raw ore, add 40g / t of sulfur mixed collector and 30g / t of foaming agent in sequence, and carry out rough separation of sulfur ...

Embodiment 2

[0036] Embodiment 2: In this embodiment, the mixed sulfur collector is made from the following components by mass: sodium alkyl sulfonate 70g, CuSO 4 30g, 70g sodium alkylsulfonate, 30g CuSO 4 The mixed sulfur collector is obtained by mixing uniformly in parts by mass.

[0037] The tin mixed collector of the present embodiment is made by the component of following mass parts: salicylic hydroxamic acid 30g, benzohydroxamic acid 50g, oleic acid 20g; The salicylic hydroxamic acid of 30g, the benzohydroxamic acid of 50g and 20g of oleic acid was mixed uniformly to obtain a tin mixed collector.

[0038] Use the mixed sulfur collector and tin mixed collector prepared in this example to process a certain fine-grained cassiterite in Wenshan, Yunnan. The raw ore tin grade is 0.138%. The specific steps are as follows:

[0039] (1) Slurry the raw ore until the concentration of the pulp is 40%. Calculated per ton of raw ore, add sulfur mixed collector 60g / t, foaming agent 50g / t in sequ...

Embodiment 3

[0044] Embodiment 3: In this embodiment, the mixed sulfur collector is made from the following components by mass: sodium alkyl sulfonate 90g, CuSO 4 10g, 90g sodium alkylsulfonate, 10g CuSO 4 The mixed sulfur collector is obtained by mixing uniformly in parts by mass.

[0045] The tin mixed collector of the present embodiment is made from the following components by mass: salicylic hydroxamic acid 40g, benzohydroxamic acid 40g, oleic acid 20g; 20g of oleic acid was mixed uniformly to obtain a tin mixed collector.

[0046] Use the mixed sulfur collector and tin mixed collector prepared in this example to process a certain fine-grained cassiterite in Gejiu, Yunnan. The raw ore tin grade is 0.224%. The specific steps are as follows:

[0047] (1) Slurry the raw ore until the concentration of the pulp is 45%. Calculated per ton of raw ore, add 80g / t of sulfur mixed collector and 60g / t of foaming agent in sequence, and carry out rough separation of sulfur to obtain rough sulfur ...

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Abstract

The invention discloses a method for recovering fine-grained cassiterite. The method of the invention uses a sulfur mixed collector and a tin mixed collector to carry out desulfurization and tin selection respectively. The two mixed collectors have good collection effects and are relatively The cost of traditional collectors is low. In the present invention, sulfur roughing is carried out first, and then the sulfur roughing tailings are subjected to one coarse, two fine and two sweeps of cassiterite to obtain tin concentrates. After the sulfur roughing concentrates are classified and deslimed Carry out sulfur concentration twice again to obtain sulfur concentrate. The present invention separates desulfurization and cassiterite flotation, so that the fine mud in the sulfur coarse concentrate will not circulate in the flotation of cassiterite. The process of the present invention On the one hand, the process prevents the fine mud in the sulfur coarse concentrate from entering the cassiterite flotation operation, thereby avoiding the consumption of the chemical agent by the fine mud and reducing the production cost; The technological process of the invention obtains the sulfur concentrate with higher grade and the tin concentrate with higher grade and recovery rate.

Description

technical field [0001] The invention relates to a method for recovering fine-grained cassiterite, which belongs to the technical field of mineral processing. Background technique [0002] Tin is a rare and precious non-ferrous metal with a long history of application and a wide range of application fields. The content of tin in the earth's crust is very low, only 0.004%. Among the more than 50 kinds of tin-containing minerals that have been discovered so far, only cassiterite can be used to produce metallic tin. Tin mines are mainly distributed in China, Indonesia, Brazil and other countries. my country is rich in tin resource reserves, the total amount of which ranks first in the world, mainly concentrated in Yunnan, Guangxi, Hunan, Inner Mongolia, Guangdong and Jiangxi provinces. The resource reserves of these six provinces account for 97.89% of my country's total resources, among which Gejiu in Yunnan is known as The "tin capital" of our country. [0003] Among the tin-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/001B03D1/02B03B7/00B03D101/02B03D103/02
CPCB03B7/00B03D1/001B03D1/02B03D2201/02B03D2203/02
Inventor 童雄华中宝谢贤杜云鹏张文杰康博文
Owner KUNMING UNIV OF SCI & TECH