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Ore grinding device

A technology of ore grinding and dehydration equipment, which is applied in the direction of grain processing, etc., can solve the problems of difficult to achieve water balance and low pulp quality, and achieve the effects of reducing consumption, increasing efficiency, and ensuring the qualified rate

Inactive Publication Date: 2015-06-03
铜陵市精品工具模具有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of low pulp quality and difficult water balance in the process of producing phosphoric acid

Method used

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  • Ore grinding device

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Embodiment Construction

[0007] Combine below figure 1 , the present embodiment includes a closed-circuit device, and the closed-circuit device is connected with a secondary dehydration device; the secondary dehydration device includes a filter, a belt conveyor and a resizing tank; the filter is connected to one end of the belt conveyor, A water pump is provided on the filter, and the water pump is connected with the water inlet pipe of the mill in the closed circuit device; the pulp inlet of the re-sizing tank is connected with the other end of the belt conveyor, and the water inlet pipe is provided on the re-sizing tank; After the slurry tank, filter equipment is added for secondary solid-liquid separation, so that the content of the slurry is reduced to less than 20%. The separated wet mine is transported to the re-slurry tank by a belt conveyor, and diluted with acid-containing sewage to a solid content of 65%. %, and then pumped into the extraction tank for reaction; the water separated by the fi...

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Abstract

The invention discloses an ore grinding device including a closed circuit device; the closed circuit device is connected with a two-level dehydrating device; the two-level dehydrating device comprises a filter, a belt machine and a repulp tank; the filter is connected with one end of the belt machine and is provided with a water pump, and the water pump is connected with a water inlet pipeline of a grinding port of a grinding machine in the closed circuit device; a pulp inlet of the repulp tank is connected with the other end of the belt conveyor, and the repulp tank is provided with a water inlet pipeline; with the use of the device, the yield of phosphoric acid can be improved, the qualified rate of the ore pulp is guaranteed, the consumption is reduced, and the benefit is increased; with the addition of the dehydrating device, the sewage digestion ability in production can be increased, energy is saved, emission is reduced, and water balance for production of phosphoric acid is quite facilitated.

Description

technical field [0001] The invention relates to an ore grinding device, in particular to an ore grinding device for producing phosphoric acid. Background technique [0002] In the production process of phosphoric acid, there are wet grinding and dry grinding; the dry grinding has large investment, complicated process, much dust and poor production environment; the wet grinding process is simple, but the amount of water brought into the phosphoric acid production plant There are many, making it difficult to achieve water balance in phosphoric acid production; at present, wet grinding is mostly used, and there are currently two wet grinding processes: one is open-circuit grinding, and the quality of the pulp produced by grinding is unstable and cannot reach sulfuric acid. Process requirements for extracting phosphate rock; Another closed-circuit grinding also has the disadvantage that the concentration of the underflow of the concentration machine is not high. Contents of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C21/00
CPCB02C21/00B02C23/08
Inventor 程路平
Owner 铜陵市精品工具模具有限责任公司
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