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Microwave heating device of alumina pulp

A microwave heating device and the technology of the heating device are applied in the field of ore pulp heating, which can solve problems such as increasing costs, and achieve the effects of improving operation rate and production capacity and reducing production costs.

Inactive Publication Date: 2011-07-27
冯雨田
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the use of steam to heat alumina slurry requires a supporting condensate collection and recovery system and supporting boilers, which will increase production costs

Method used

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  • Microwave heating device of alumina pulp
  • Microwave heating device of alumina pulp
  • Microwave heating device of alumina pulp

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Embodiment Construction

[0012] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0013] An embodiment of the present invention provides a microwave heating device for alumina slurry, which includes a single slurry pipe and an autoclave. Small holes are opened on the upper part of the single slurry pipe and the top of the autoclave, and microwave ovens are installed at the small holes. generating device. The small holes should be evenly distributed above the slurry single pipe and the top of the autoclave, and the number of holes to be opened is calculated according to the calculation. The alumina slurry to be heated is installed inside the slurry single pipe and the autoclave, and the microwaves emitted by the microwave generator pass through the smal...

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Abstract

The invention discloses a microwave heating device of alumina pulp, comprising a slurry single tube and a digester; the top parts of the slurry single tube and the digester are respectively provided with a small hole which is provided with a microwave generator for heating alumina pulp in the slurry single tube and the digester. The microwave heating device heats the alumina pulp by utilizing microwave to replace steam can achieve higher reaction temperature, does not form scabs in the microwave heating process, shortens heating time under the condition that the heating equipment is simplified, reduces the production cost and improves the operating rate and productivity of the unit.

Description

technical field [0001] The invention relates to the field of alumina production, in particular to pulp heating in a high-pressure dissolution process in the alumina production process. Background technique [0002] In the high-pressure dissolution section of the alumina production process, an inner and outer casing or an autoclave with a heating tube bundle are usually used to exchange heat between high-temperature steam and alumina slurry to heat the alumina slurry. Compared with the alumina slurry to be heated, the temperature of the steam used for heating is relatively high, so it is easy to form scabs on the heat exchange surface of the casing or the autoclave during the heat exchange process. The scarring of the heat exchange surface reduces the heat transfer coefficient and increases the energy consumption, which is the main reason for the high total energy consumption in the alumina production process. In order to ensure a certain heat transfer efficiency, the scab n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F7/02H05B6/64
Inventor 冯雨田
Owner 冯雨田