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Gravitation separation tailing cassiterite flotation method

A technology for gravity separation of tailings and flotation, applied in flotation, chemical instruments and methods, magnetic separation, etc., can solve the problems of reducing recovery rate, affecting the utilization rate of shaking table, affecting the classification effect, etc.

Active Publication Date: 2015-05-20
临武县南方矿业有限责任公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Therefore, if cassiterite with a fine particle size of -19μm is also re-selected in the shaking table, it will affect the utilization rate of the shaking table for other particle sizes, and because the particle size distribution is too wide, it will affect the classification effect, resulting in recovery. reduce

Method used

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  • Gravitation separation tailing cassiterite flotation method
  • Gravitation separation tailing cassiterite flotation method
  • Gravitation separation tailing cassiterite flotation method

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Experimental program
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Effect test

Embodiment 1

[0087] Embodiment 1 tin phase analysis

[0088] The phase analysis of tin in gravity separation tailings is shown in Table 1.

[0089] Table 1 Phase analysis of tin in gravity separation tailings

[0090] mineral name

[0091] The phase analysis shows that the tin grade of gravity separation tailings is 0.72%, among which the tin minerals are mainly cassiterite, the tin content in cassiterite occupies 79.17%, the tin content in phryotinite occupies 13.89%, and the colloidal tin ore The tin content in it accounts for 6.94%. Owing to the existence of zurtzite and colloidal tin, and the total amount accounts for 20.83%, it will have an adverse effect on the recovery rate of tin flotation.

Embodiment 2

[0092] The particle size analysis of embodiment 2 tin

[0093] After sampling and chemical analysis of the gravity separation tailings, the gravity separation tailings contain 0.33% lead, 0.15% zinc and 0.68% tin. The water analysis results of gravity separation tailings sieve are shown in Table 2.

[0094] It can be seen from Table 2 that the -74μm content of the gravity separation tailings is 48.97%, and the Sn metal is mainly distributed in the -74μm+38μm particle size and -38μm+10μm particle size, and the distribution rates are 28.39% and 33.92%, respectively. The distribution rate is 13.85%. According to the identification under the microscope, in the -74μm+10μm particle size, cassiterite mainly exists in the form of monomers, and a very small amount is associated organisms; in the -150μm+74μm particle size, the distribution rate accounts for 21.69%, but cassiterite exists in the form of associated organisms It accounts for half of the total, and a small amount is fine-...

Embodiment 3

[0097] Embodiment 3 Gravity separation tailings industrial application technical scheme

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Abstract

The invention provides a technological method for recovering cassiterite in gravitation separation tailings. The method is characterized by comprising the step that the gravitation separation tailings are subjected to pretreatment to remove tailings, wherein a vibrating screen is adopted to remove the tailings at the level of +150 microns in the gravitation separation tailings in advance. According to the method, through the processes of pretreatment to remove tailings, magnetic separation to remove iron, concentration, desulfuration floatation and buoyant weight combination, the fine silt cassiterite in the gravitation separation tailings can be effectively recovered; meanwhile, since the vibrating screen is used for removing the tailings at the level of +150 microns in advance, the feed grade selected in the process can be increased, the concentrate grade and the recovery rate can also be increased, and the reagent cost can be lowered; besides, by the adoption of an independently developed floatation reagent, tin concentrate with the concentrate grade of 7.36% and the recovery rate of 60.34% can be obtained by means of flotation when the tin grade of the gravitation separation tailings is 0.66%; qualified tin concentrate with the tin grade of 40.21%, the process feed recovery rate of 46.05% and the concentration plant raw ore recovery rate of 17.45% can be obtained by sorting tin flotation concentrate through efficient centrifugal equipment.

Description

technical field [0001] The invention relates to a cassiterite flotation process for gravity separation tailings, which belongs to the field of ore dressing. Background technique [0002] Tin ore is one of the advantageous minerals in my country, and its reserves rank first in the world. Among the six largest tin-producing countries in the world, my country ranks first. China's tin ore resources are mainly distributed in Yunnan, Guangxi, and Hunan provinces, and the two super-large tin mining areas of Yunnan Gejiu and Guangxi Nandan Dachang are the most important tin ore resources in China. The two largest tin production enterprises in China Yunnan Tin and Guangxi Huaxi are located in these two mining areas respectively. [0003] my country is rich in tin ore resources and widely distributed. Mainly primary ore deposits, of which there are many associated components, and the comprehensive utilization value is great. Cassiterite (SnO 2 ) is the main tin-bearing mineral re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03C1/30
Inventor 谢善国刘清高王玉成文武生谭志超唐义胜罗飞
Owner 临武县南方矿业有限责任公司
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