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Method for preparing tetrabasic lead sulphate by extending PbO production technology with energy conservation

A four-basic lead sulfate, production process technology, applied in the direction of lead sulfate, chemical industry, sustainable manufacturing/processing, etc., can solve the problems of long 4BS process time, insufficient 4BS purity, high production cost, etc., to achieve uniform appearance, The effect of low energy consumption and high production efficiency

Active Publication Date: 2017-10-20
安徽徽能化工科技有限公司
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Problems solved by technology

Through a lot of research on the process of synthesizing 4BS by various methods, we found that the process of generating 4BS in the above methods takes a long time, and requires additional heating to consume energy; and the purity of the synthesized 4BS is not enough, especially the 3BS thermal decomposition method, the production cost is high Defects

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  • Method for preparing tetrabasic lead sulphate by extending PbO production technology with energy conservation
  • Method for preparing tetrabasic lead sulphate by extending PbO production technology with energy conservation
  • Method for preparing tetrabasic lead sulphate by extending PbO production technology with energy conservation

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Embodiment Construction

[0029] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0030] A method for energy-saving preparation of tetrabasic lead sulfate by extending Huangdan production process, the specific method is as follows:

[0031] (1) Storage and heat preservation:

[0032] The discharge temperature of yellow dan from the calciner reaches 450°C, so an insulated storage tank is installed under the discharge port of the calcine furnace, and an automatic metering device is installed at the lower opening of the storage tank to ensure that the yellow dan (lead oxide) ) The temperature of the product does not decrease;

[0033] (2) The first round of feeding

[0034] (1) First-level mixed charging: move the first reaction tank (reactor) to the bottom of the heat preservation storage tank, inject 125,000 cubic centimeter...

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Abstract

The invention discloses a method for preparing tetrabasic lead sulphate by extending a PbO production technology with energy conservation and without additional heating. The method fully and effectively utilizes PbO, as a product of the PbO production technology, and heat generated after product calcining. By implementing the method provided by the invention, the characteristics of low energy consumption, high production efficiency and production cost conservation can be realized, produced products are uniform in morphology similarly, generated waste liquid can be recycled, and the method is a novel preparation method which cannot bright environment pollution.

Description

technical field [0001] The invention relates to the technical field of deep processing of yellow dandelion, in particular to a method for energy-saving preparation of tetrabasic lead sulfate by extending the production process of huangdan. Background technique [0002] At present, the production process of yellow lead is melting → powder making → calcination oxidation → cooling → crushing → packaging. The terminal product yellow lead (PbO) is directly used for sales, and there is no report on the direct extension of the production chain. [0003] The chemical formula of tetrabasic lead sulfate (4BS) is 4PbO·PbSO 4 , equivalent to 4 moles of PbO and 1 mole of PbSO 4 compounds whose main raw materials are PbO and H 2 SO 4 . In the lead-acid battery industry, 4BS is a positive electrode additive, which is one of the components of the positive active material in the battery. Adding an appropriate amount of 4BS in the production process of the positive plate can promote the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G21/20
CPCC01G21/20C01P2002/72C01P2004/03C01P2004/61Y02P20/10
Inventor 朱可可吴红波夏曼曼邢化岛钱海
Owner 安徽徽能化工科技有限公司
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