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Raw material waste reduction dissolution system, dissolution method and maintenance method

A raw material and return pipe technology, applied in the direction of alumina/hydroxide, etc., can solve the waste of raw materials and other problems, and achieve the effects of reducing ore waste, saving fresh water consumption, and reducing production costs

Active Publication Date: 2016-12-07
广西田东锦鑫化工有限公司
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Problems solved by technology

In the traditional process, the treatment of these raw materials is directly into the next process, so that the alumina in the raw materials is not fully dissolved, and then becomes red mud after dilution, sedimentation and separation, thus wasting a lot of raw materials

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  • Raw material waste reduction dissolution system, dissolution method and maintenance method

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Embodiment Construction

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] Such as figure 1 The above is a connection block diagram of the stripping system of the present invention, which includes sequentially connected preheating sleeves, heating sleeves, heat preservation sleeves, flash tanks, dilution tanks, post-dilution tanks and settling tanks, and also includes diaphragms pump, high-pressure steam gen...

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Abstract

The invention provides a raw material waste reduction dissolution system, dissolution method and maintenance method and belongs to the technical field of chemical metallurgical. The dissolution system comprises a preheating casing, a heating casing, an insulation casing, a flash tank, a dilution tank, a diluted-material tank, a settling tank, a membrane pump and a high-pressure steam generator; a membrane-pump main entry pipe is arranged at the entry end of the membrane pump, a desilication slurry pipeline is communicated with the membrane-pump main entry pipe, and the exit end of the membrane pump is communicated with the entry end of the preheating casing; the high-pressure steam generator is connected to the heating casing; a diluted-material pump is arranged between the diluted-material tank and the settling tank, and the exit end of the diluted-material pump is connected to the settling tank; the exit end of the diluted-material pump is further communicated with the membrane-pump main entry pipe through a raw material returning pipe. By the arrangement, raw material waste caused by dissolution shutdown and the fact that dissolution temperature cannot meet requirements during operation can be reduced.

Description

【Technical field】 [0001] The invention relates to the technical field of metallurgy and chemical industry, in particular to a stripping system, stripping method and maintenance method for reducing waste of raw materials. 【Background technique】 [0002] The alumina high-pressure dissolution system is the core part of alumina production. The raw ore pulp sent from the raw material mill is gradually heated to 260°C-270°C through the preheating sleeve and the heating sleeve, and after being kept warm and fully reacted, it is sent into 10 The first-stage flash evaporator self-evaporates, fully releases the heat in the material, gradually reduces the temperature and pressure of the pulp, and finally sends it to the dilution tank through the last-stage flash evaporator, and the diluted material enters the next process. [0003] In the dissolution process, the dissolution temperature is the main factor affecting the dissolution rate and dissolution rate. When the temperature does no...

Claims

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Application Information

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IPC IPC(8): C01F7/02
CPCC01F7/02
Inventor 赵志强
Owner 广西田东锦鑫化工有限公司
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