Boron-ore-slurry solid-liquid separation method

A process method and a liquid separation technology, applied in the field of boron beneficiation, can solve the problems of large floor area, low production efficiency, and environmental pollution, and achieve the effects of saving floor area, improving production efficiency, and improving recovery rate

Inactive Publication Date: 2009-09-02
吉林市恒昌过滤机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Most of the ferroboron beneficiation enterprises in China have been using the traditional natural precipitation cooling process. The disadvantages of using this process are large area, low production efficiency, and environmental pollution. The pool covers an area of ​​more than ten acres of land, and the temperature in the north is low in winter, so it cannot be produced. Boron ore powders of large and small sizes are mixed together, and the products cannot be graded. The operating environment for production operators is harsh.

Method used

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  • Boron-ore-slurry solid-liquid separation method

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0008] Example 1: In the boron ore slurry after magnetic separation of iron powder, usually the dry basis boron powder accounts for 5-20% of the total weight of the boron ore slurry. Add polyacrylamide as a flocculant, the amount is 0.5‰ of the dry basis weight of the boron pulp, add water and stir in the flocculant dissolving tank 1 to make a flocculant solution, the flocculant solution is mixed with the boron pulp according to the solute ratio through the metering pump 2, After being mixed evenly by the mixer 3, some of the fine boron powder particles in the boron ore slurry are aggregated into larger flocculation groups. The flocculation process is completed instantly in the mixer 3. The property is not good, which will affect the precipitation. It is better at normal temperature. Then the mixed solution is transported to the concentration tank 4 for precipitation. A slant plate 7 is arranged on the upper part of the secondary tapered groove, and 3-5 tapered grooves can als...

example 2

[0009] Example 2: Add a flocculant to the boron pulp, the amount is 2‰ of the dry weight of the boron pulp, add water and stir to make a flocculant solution, enter the sediment in the two conical tanks 5 and 6, settle for 30 minutes, and other Technological process is identical with example 1.

example 3

[0010] Example 3: The boron ore slurry after magnetic separation of iron powder is transported to the concentration tank 4 for precipitation. At a temperature that ensures the free flow of the boron ore slurry, such as about 15°C, the heavier particles in the boron ore slurry settle in the first-stage conical tank 5 Inside, the lighter particles settle in the secondary conical groove 6, and the sediment settles in each conical groove for 2 hours, and then is sent to the filter press to filter respectively, and other processes are the same as example 1.

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Abstract

A boron ore slurry solid-liquid separation process, including boron ore slurry obtained after magnetic separation of iron powder, is characterized in that: the boron ore slurry or the boron ore slurry with flocculant is input into the concentration tank, and at least two Conical tank, the boron ore slurry naturally settles in the thickening tank, and the particles of different weights fall into the corresponding conical tanks at the lower part of the thickening tank, and then the sediments that have settled in each conical tank for at least 30 minutes are sent to the press filter respectively Filter by machine to make boron mud cake. An overflow port is provided on the upper part of the thickening tank. The clear liquid obtained after solid-liquid stratification is discharged from the overflow port and reused in production. It is 0.5-2‰ of the weight of boron powder on a dry basis in boron pulp, and the mixing temperature of boron pulp and flocculant is 5-60°C. Compared with the traditional drying process, this method can improve production efficiency and save about 95% of the floor area. , save water, reduce environmental pollution, the product has achieved grade grading, and the moisture content can reach 18-23%.

Description

technical field [0001] The invention relates to a solid-liquid separation method of boron ore slurry, which belongs to the field of boron mineral processing. Background technique [0002] At present, the domestic iron boron beneficiation enterprises produce boron ore powder and iron ore powder by grinding the boron iron ore into 150-300 mesh iron boron powder through a ball mill, then using a magnetic separator to separate the iron powder, and the remaining Boron ore slurry is mainly boron powder, and then the boron ore slurry is separated from solid and liquid to select boron ore. Due to the small particle size and high viscosity of boron ore powder, it is not easy to precipitate, so it is difficult to filter. The solid-liquid separation of boron pulp has always been a difficult problem for mineral processing enterprises. Most of the ferroboron beneficiation enterprises in China have been using the traditional natural precipitation cooling process. The disadvantages of us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D36/04B01D21/00B01D25/12
Inventor 王文斌
Owner 吉林市恒昌过滤机械有限公司
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