A kind of rapid dehydration method of iron concentrate powder

A technology for fast 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 in the final product, large investment in the dehydration system, high production cost, etc., and achieve a small footprint , Reduce investment and production costs, and facilitate operation

Inactive Publication Date: 2016-11-30
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 invention provides an iron concentrate Mineral powder rapid dehydration method

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  • A kind of rapid dehydration method of iron concentrate powder
  • A kind of rapid dehydration method of iron concentrate powder

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Effect test

Embodiment 1

[0045] A kind of fast dehydration method of iron concentrate powder of the present embodiment, its steps are:

[0046] A. If figure 1 As shown, four sedimentation tanks 2 are arranged side by side; the sedimentation tank 2 includes a pulp inlet 25, a pulp spacer 27, a sedimentation tank discharge port 28 and a slope bottom 29 of the sedimentation tank; the pulp inlet 25 is opened in the sedimentation tank 2 On one side of the top, the ore discharge port 28 of the sedimentation tank is opened at the bottom of the other side wall of the sedimentation tank 2; the slurry spacer 27 is set on the inside of the ore discharge port 28 of the sedimentation tank; the bottom of the sedimentation tank 2 is a The slope bottom 29 of the sedimentation tank with a low inclination angle is 1%; the top of the sedimentation tank 2 is provided with a solar heating device 5;

[0047] B. Grouting: inject the slurry of iron concentrate powder 11 from the slurry inlet 25 of the sedimentation tank 2, ...

Embodiment 2

[0055] The basic steps of the rapid dehydration method of iron concentrate powder in this embodiment are the same as those in Embodiment 1, and the improvement is that the iron content grade of the iron concentrate powder 11 used is 68%. In step C, the filtering device 6 is a pulp spacer 27 with mesh. Such as figure 2 As shown, in step E, the solar heating device 5 includes a heat collecting layer 51, a heat storage layer 52 and a heat conducting rod 53; the heat collecting layer 51 is arranged on the top, and the heat storage layer 52 is placed below, and the fixed connection is an integral structure; the heat conducting rod The fixed end of 53 is vertically inserted into the heat storage layer 52 and fixedly connected with the heat collection layer 51, and the free end is vertically inserted into the iron concentrate powder 11 inside the sedimentation tank 2 to conduct heat to the iron concentrate powder 11, and the heat collection layer 51 is Flat-plate solar heat collect...

Embodiment 3

[0058] A kind of fast dehydration method of iron ore powder of this embodiment, its basic steps are the same as embodiment 2, the difference is: add electric heater in the pond peripheral wall, the inner wall material of sedimentation pond 2 pond wall is metal, increases the conduction of heat As a result, the outer wall is made of concrete, and the heat loss is slow, avoiding unnecessary waste of heat. The inclination slope of the slope bottom 29 of the sedimentation tank is 3%. In step D, let stand for 40 minutes. The heat conduction rod 53 is non-stretchable, and metal rods are arranged vertically and evenly on its surrounding wall to form a stirrer, which conducts heat while stirring the iron ore concentrate powder, so that the heat can be evenly distributed, thereby making the dehydration more uniform and further improving the dehydration efficiency .

[0059] In the rapid dehydration system of iron ore powder in this embodiment, an electric heater is added to the surro...

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Abstract

The invention discloses a rapid dewatering method for iron concentrate powder, and belongs to the technical field of ore dressing in metallurgy industry. According to the method, four sedimentation basins are established, and a high-pressure gas blowing apparatus and a solar energy heating apparatus are provided. The end of a gas blowing pipe put into the high-pressure gas blowing apparatus is artificially inserted from the upper end to the lower end of each sedimentation basin for successive pressurized gas blowing, superfluous water in the basin floats to the surface of the sedimentation basin along with the gas flow in the basin, and standing is performed for a period after all clear water at the basin surface is completely discharged; and when standing is performed, residual water is evaporated under the heating effect of the solar energy heating apparatus and the heat conduction effect of iron concentrate self, and when the water content of the iron concentrate powder in the basin reaches 10% or lower, the product can be cleared and discharged. The method realizes target that the iron concentrate powder in the sedimentation basin of a small / medium-size iron-mine ore dressing plant is rapidly dewatered as well as the investment is less, and the final product is low in water content.

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 ore concentrate powder produced in 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 problem. Iron conce...

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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