A method for rapid dehydration of iron concentrate powder in a sedimentation tank

A technology for rapid dehydration of iron concentrate powder, applied in separation methods, chemical instruments and methods, filtration and separation, etc., can solve the problems of high moisture content of the final product, large investment in dehydration system, low production efficiency, etc. Small size, lower investment and production costs, and easy operation

Inactive Publication Date: 2017-03-01
马鞍山市茂鑫环保新材料有限公司
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Problems solved by technology

[0008] Aiming at the problems in the prior art that the dehydration speed of iron concentrate powder in the sedimentation tank is slow, the moisture content of the final product is high, the production efficiency is low, the investment in the existing dehydration system is large, and the production cost is high, the present invention provides a sedimentation tank Rapid Dehydration Method of Chinese Iron Concentrate Powder

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  • A method for rapid dehydration of iron concentrate powder in a sedimentation tank
  • A method for rapid dehydration of iron concentrate powder in a sedimentation tank

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Embodiment 1

[0044] A method for quick dehydration of iron concentrate powder in a settling tank of the present embodiment, the steps are:

[0045] A. Set up 4 iron concentrate powder quick dehydration devices side by side, such as figure 1 As shown, they are device 1, device 2, device 3 and device 4 respectively; the iron concentrate powder quick dehydration device is as figure 2 As shown, it includes air compressor 1, blowing pipe 3, sedimentation tank 4, pulp inlet 5, filter mechanism, sedimentation tank discharge port 8 and overflow drainage ditch 9, wherein: sedimentation tank 4 is a rectangular tank body, the specification The size is 9.0m*4.5m*4.2m, and the material is concrete. The slurry inlet 5 is opened on one side of the top of the sedimentation tank 4, and the discharge port 8 of the sedimentation tank is opened on the bottom of the other side wall of the sedimentation tank 4. The sedimentation tank The specification of the ore discharge port 8 is 2.0m*2.0m; the filter mecha...

Embodiment 2

[0054] A method for rapid dehydration of iron concentrate powder in a sedimentation tank in this embodiment, its basic steps are the same as in Example 1, and the improvement is that the applied iron concentrate powder 11 has an iron grade of 68% and a product particle size greater than 200 mesh accounted for less than 80%. In step C, the filtering mechanism is a slurry spacer plate 7 with mesh. In step E, an electric heater is set in the side wall of the sedimentation tank 4 and the slope bottom 10 of the sedimentation tank, and the air blowing pipe 3 is a galvanized steel pipe; the inclination gradient of the slope bottom 10 of the sedimentation tank is 2%; 3 air blowing pipes are 4, connected in parallel Finally, it is connected with the exhaust hose 2 of the air compressor, and blows air evenly to 11 pairs of iron concentrate powders 11 inside the iron concentrate powder from four directions of the sedimentation tank 4 at the same time, the blowing pressure is 0.9MPa, and ...

Embodiment 3

[0057] The method for rapid dehydration of iron concentrate powder in the sedimentation tank in this embodiment has the same basic steps as in Embodiment 2, except that in step E, a solar heating mechanism is installed on the top of the sedimentation tank 4 . In step B, the inclination slope of the slope bottom 10 of the sedimentation tank is 3%. In step D, let stand for 40 minutes.

[0058] In the method for quick dehydration of iron concentrate powder in a sedimentation tank of this embodiment, a solar heating mechanism is arranged on the top of the sedimentation tank 4. Although the initial investment is increased, the production cost can be effectively reduced, and the heating mechanism on the walls around the sedimentation tank can also be omitted. The total load of the whole system is reduced, but the production efficiency will not be reduced, and the versatility of the whole system is improved.

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Abstract

The invention discloses an iron concentrate powder high-speed dehydration method in a settling pond and belongs to the technical field of metallurgical industry beneficiation. According to the method, multiple rectangular concrete settling ponds with inclined slope bottoms are constructed, an air compressor blowing device is arranged, the tail ends of blowing pipes which are connected into an air compressor are inserted into the pond from the upper end to the lower end of the settling pond for conducting 'compressing and blowing', the extra moisture in the pond is floated out of the surface of the settling pond along with air flow in the pond, standing is conducted for a while, after the clean water on the surface of the pond is drained completely, the moisture content of the iron concentrate powder in the pond can reach 10%, and materials can be discharged. By the utilization of the theories that the iron concentrate powder is not large in density and not prone to absorbing water, the moisture absorbed on the surface of the iron concentrate powder is much and irregular in shape, so that a gap is large and an air flow channel is formed, and therefore the moisture on the surface of the iron concentrate powder is easy to blow out. By means of the method, the high-speed dehydration of the iron concentrate powder in the settling pond of small and medium sized iron ore mine dressing plants can be achieved, the investment is little, and the moisture content is low in a final product.

Description

technical field [0001] The invention belongs to the technical field of mineral processing in the metallurgical industry, in particular to a rapid dehydration method for iron concentrate powder in a product sedimentation tank of a metallurgical ore processing plant. Background technique [0002] Metallurgical industry The iron ore concentrate powder obtained in the production process of the iron ore dressing plant exists in the form of slurry. As the final product for sale, the moisture content should be controlled below 10% to meet product quality and external transportation. Therefore, dehydration treatment must be carried out for iron ore concentrate. The iron concentrate powder dehydration system is an important link in the production process of the concentrator. For large and medium-sized concentrators, a concentrate filtration plant is usually designed, and multiple dehydration equipment such as vacuum filters or filter presses need to be installed inside to solve the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D36/04
Inventor 张晓宇
Owner 马鞍山市茂鑫环保新材料有限公司
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