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System and method for adjusting washing water amount of dense countercurrent washing ore leached mud

A technology of countercurrent washing and leaching slag, which is applied in the direction of solid separation, etc., can solve problems such as fluctuations and unreachable cobalt content in washing water, and achieve the effects of reducing production costs, simple method, and reducing excessive addition

Inactive Publication Date: 2013-03-20
江西江钨钴业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in actual production, for example, due to certain fluctuations in the cobalt content of cobalt ore leaching slag, in the case of three shifts of continuous operation, the amount of washing water added in the previous calculation may be too much or too little, which cannot be achieved. Make effective adjustments during on-duty hours, resulting in excessive addition of washing water or cobalt content in the leaching residue cannot meet the standard

Method used

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  • System and method for adjusting washing water amount of dense countercurrent washing ore leached mud

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1) Select the underflow concentration of 25%, control the ratio of the amount of washing water added to the cobalt ore leaching slurry to be washed to 4:1, and continuously perform dense countercurrent washing;

[0030] 2) During production and operation, sample the cobalt content in the supernatant of the last stage (addition of washing water and export of washed slag), the cobalt content of the supernatant of this stage is 0.6g / L, reduce the amount of washing water by 25%; after half an hour , the cobalt content of the final stage supernatant was detected to be 0.8g / L; after 3 hours, the cobalt content in the washing slag was detected to be 0.05%, reaching the standard. Continue to run according to this amount of washing water.

Embodiment 2

[0032] 1) Select the underflow concentration of 35%, control the ratio of the amount of washing water added to the cobalt ore leaching slurry to be washed to 4.5:1, and continuously perform dense countercurrent washing;

[0033] 2) During production and operation, sample the cobalt content in the supernatant of the last stage (addition of washing water and export of washed slag), the cobalt content of the supernatant of this stage is 0.4g / L, reduce the amount of washing water by 40%; after half an hour , the cobalt content of the final stage supernatant was detected to be 1.3g / L; after 3 hours, the cobalt content in the washed slag was detected to be 0.09%, reaching the standard. Continue to run according to this amount of washing water.

Embodiment 3

[0035]1) Select the underflow concentration of 37%, control the ratio of the amount of washing water added to the cobalt ore leaching slurry to be washed to 3:1, and continuously perform dense countercurrent washing;

[0036] 2) During production and operation, sample and test the cobalt content of the supernatant of the last stage (addition of washing water and export of washed slag), the cobalt content of the supernatant of this stage is 3.2g / L, increase the amount of washing water by 20%; after half an hour , the cobalt content of the final stage supernatant was detected to be 2.8g / L; after 3 hours, the cobalt content in the washing slag was detected to be 0.14%, reaching the standard. Continue to run according to this amount of washing water.

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Abstract

The invention discloses a method for adjusting washing water amount of dense countercurrent washing ore leached mud on a production line. The method comprises the following steps of: feeding leached mud into a bottom current dense groove, controlling the bottom current concentration at 25-45 percent, controlling the ratio of the washing water amount to cobalt ore leached mud required to be washed at (2.5-5.0):1, and performing dense countercurrent washing continuously; feeding washing water into a tail stage dense groove; filtering bottom current of the tail stage dense groove through a band filter, and returning a filtrate to the bottom current dense groove; directly conveying a dense countercurrent washing liquid from the tail stage dense groove to a detection device, conveying washed mud on the downstream of the band filter to the detection device, sampling and detecting the mineral content; controlling the mineral content of a supernatant of the tail stage dense groove at 0.7-2.9g / L for regulating the washing water amount; and when the mineral content of waste washings does not reach a standard, increasing the washing water mount appropriately. Due to the adoption of the method, an appropriate washing water adding amount can be determined effectively in time during production, and the content of cobalt in leached mud is determined in a way of ensuring emission on standard; and the method is easy to operate, and the production cost can be lowered effectively.

Description

technical field [0001] The invention relates to a system and method for adjusting the washing water volume of dense countercurrent washing ore leaching slag, especially a system and method for adjusting the washing water volume of dense countercurrent washing cobalt ore leaching slag, which is a timely and effective control method in the production of dense countercurrent washing leaching slag. The process of adding the amount of washing water. The invention can be used not only for washing "cobalt ore leaching slag", but also for washing leaching slag of other ores. Background technique [0002] In the prior art, dense countercurrent washing is a commonly used method for washing the leach residue. Usually before washing, according to the content of valuable metals contained in the leached slag and the content index of valuable metals to be achieved in the slag after washing, the relevant calculation formula is used to calculate the amount of washing water that needs to be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B13/00
Inventor 李赣伟苏捷谢万程
Owner 江西江钨钴业有限公司