Boron-ore-slurry solid-liquid separation method

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...

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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.

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