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Beneficiation method for complex Te ore

A beneficiation method and tellurium ore technology are applied in the beneficiation field of complex tellurium ore to achieve the effects of improving flotation efficiency, good separation effect and reducing the amount of beneficiation

Active Publication Date: 2014-11-19
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the deficiencies of the above technologies and realize the problem of high-efficiency separation and enrichment of low-grade and extremely low-grade complex and refractory tellurium ore resources, the purpose of the present invention is to provide a method for beneficiation of complex tellurium ore, in which the tellurium ore is crushed , grinding, grading, after grading, materials with a particle size below 0.039mm are re-selected and discarded, and combined with flotation process to recover medium and fine-grained tellurium minerals. This method can effectively recover low-grade and extremely low-grade complex tellurium ores. tellurium

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  • Beneficiation method for complex Te ore

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Example 1: An extremely low-grade, complex and refractory tellurium ore sample is taken from Sichuan Shimian, containing 0.08% Te, 9.04% S, 19.59% Fe, and SiO 2 4.90%, CaCO 3 24.91%, MgO 10.80%, Al 2 o 3 3.09%, using as figure 1 The process flow shown, the specific process parameters and beneficiation indicators are as follows:

[0025] (1) Selectively grind tellurium ore with a particle size of ≤12mm after crushing in a ball mill. The grinding conditions are as follows: the grinding concentration is 60%, the pH of the grinding system is 7.5-8, and the grinding products are classified by high-frequency vibrating screen, among which Parts with a particle size greater than 0.074mm are returned to the grinding machine, until the grinding fineness of the grinding product is -0.074mm, accounting for 90%, and the final grinding product is classified by a hydrocyclone;

[0026] (2) After step (1) grading, the material with a particle size below 0.039mm is re-selected and...

Embodiment 2

[0031] Example 2: Henan low-grade, complex and refractory tellurium ore sample, containing Te 0.11%, S 9.64%, Fe 20.53%, SiO 2 5.30%, CaCO 3 23.82%, MgO 11.25%, Al 2 o 3 3.22%, the specific process parameters and beneficiation indicators are as follows:

[0032] (1) Selectively grind tellurium ore with a particle size of ≤12mm after crushing in a ball mill. The grinding conditions are as follows: the grinding concentration is 62%, the pH of the grinding system is 7.5-8, and the grinding products are classified by high-frequency vibrating screen, among which Materials with a particle size above 0.074mm are returned to the grinding machine until the grinding fineness of the grinding product is -0.074mm, accounting for 92%, and the final grinding product is classified by a hydrocyclone;

[0033] (2) After step (1), the material with a particle size below 0.039mm is re-selected and discarded by a centrifuge, and a large amount of tailings are discarded to obtain a heavy meta...

Embodiment 3

[0038] Example 3: Sichuan low-grade, complex and refractory tellurium ore sample, containing Te 0.12%, S13.82%, Fe 26.20%, SiO 2 10.21%, CaCO 3 21.52%, MgO 12.65%, Al 2 o 3 4.67%, the specific process parameters and beneficiation indicators are as follows:

[0039] (1) Selectively grind tellurium ore with a particle size of ≤12mm after crushing in a ball mill. The grinding conditions are as follows: the grinding concentration is 64%, the pH of the grinding system is 7.5-8, and the grinding products are classified by high-frequency vibrating screen, among which The part with a particle size greater than 0.074mm is returned to the grinding machine, and the grinding fineness of the grinding product is -0.074mm, accounting for 92%, and the final grinding product is classified by a hydrocyclone;

[0040] (2) After step (1), the material with a particle size below 0.039mm is re-selected and discarded by a spiral separator, and a large amount of tailings are discarded to obtain...

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Abstract

The invention discloses a method for recovering Te minerals from complex Te ore, and belongs to the technical field of mineral process engineering. The reselection-flotation combined method which is low in cost and stable and mature in process is put forward so that the Te minerals can be recovered from the complex Te ore. According to the technical scheme, the method is characterized in that the classification-separation process includes the steps of ore grinding, classification, reselection and flotation; firstly, broken raw ore is ground so that the product with the fineness of -0.074 mm can account for 90% to 92%; after classification is conducted through a water separating machine device, reselecting and tailing are conducted on the part with the fineness of -0.039 mm, and the process of rough flotation, sweeping and triple refined flotation is conducted on the part with the fineness of +0.039 mm. The method is suitable for processing the low-grade and extremely-low-grade complex Te ore with 0.08% to 0.12% of Te so that high-quality Te concentrates with the Te grade of 3.30% to 4.20% and the recovery rate of 85% or higher can be obtained. The method absorbs the advantages of the reselecting and tailing process and the advantages of the flotation process, is simple in process, reasonable in procedure structure, high in adaptability to raw materials, good in separation effect, stable in index and easy to implement industrially.

Description

technical field [0001] The present invention relates to a beneficiation method, in particular to a beneficiation method of complex tellurium ore. The method adopts the combined process of gravity separation and flotation, and absorbs the advantages of gravity separation process and flotation process. This method is suitable for low-grade Sorting tellurium concentrates from very low grade complex tellurium ores. Background technique [0002] Tellurium element (Te) was discovered in 1782. Metal tellurium is bright lead gray and belongs to dispersed elements. Its average abundance in the crust is very low (6<10 -6 ), so some scholars believe: "Scattered elements do not form independent deposits, they exist in the deposits of other elements in the form of associated elements." However, in recent years, the discovery and geological exploration of a series of important telluride-type gold-silver deposits and gold-silver polymetallic deposits at home and abroad have shown tha...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03B1/00
Inventor 童雄王晓邓政斌谢贤吕昊子吕向文周永诚韩彬
Owner KUNMING UNIV OF SCI & TECH
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