Comprehensive utilization method and equipment for producing soda ash residue by ammonia-soda process

A technology of ammonia-soda method and alkali slag, which is applied in the field of comprehensive utilization of soda ash residue produced by ammonia-soda method, to achieve the effect of improving processing efficiency

Active Publication Date: 2022-01-28
关祥瑞
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, how to comprehensively utilize various components of alkali slag is an unresolved technical problem in the art

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  • Comprehensive utilization method and equipment for producing soda ash residue by ammonia-soda process
  • Comprehensive utilization method and equipment for producing soda ash residue by ammonia-soda process
  • Comprehensive utilization method and equipment for producing soda ash residue by ammonia-soda process

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Embodiment Construction

[0048] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0049] The present invention uses the ammonia-soda process alkali slag of Tangshan Sanyou Chemical Co., Ltd. as a raw material, and its composition is shown in Table 1 after repeated analysis by the Inspection Center of Tianjin Chemical Industry Research and Design Institute.

[0050] Table 1 Analysis of Alkali Slag Components

[0051]

[0052] Based on the analysis results, a feasible comprehensive utilization method...

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Abstract

The embodiment of the invention provides a comprehensive utilization method and equipment for producing soda ash residue by using an ammonia-soda process, which comprises the steps of adjusting the pH value of the soda residue to 6.5-7.5 by using hydrochloric acid, and converting calcium-containing and magnesium-containing components in the soda residue into corresponding chlorides; and carrying out dry-wet separation, repeatedly washing solids until the chloride ion concentration is 0.2% or below, adjusting the concentration of the generated liquid, and chelating with compound amino acid to form a compound amino acid chelated liquid/solid/body fertilizer, wherein the obtained solid sand ash is used for manufacturing cement clinker, a retarder, a baking-free brick, a solid fertilizer and/or a roadbed material. Various components of the soda residue are comprehensively utilized, and waste is turned into wealth.

Description

technical field [0001] The invention relates to the technical field of alkali slag treatment, in particular to a comprehensive utilization method and equipment for producing soda ash slag by ammonia-soda method. Background technique [0002] The "ammonia-soda method" soda ash production enterprises, which account for 46% of the country's soda ash production capacity, discharge a large amount of waste residue and liquid every year. [0003] Ammonia-soda production enterprises are currently adopting some solutions to the problem of a large amount of waste residue and liquid discharge. For example, building cofferdams, repairing river dams, changing equipment, and adjusting processes, but failed to fundamentally change the discharge scale of waste liquid and residue. [0004] What caused all the consequences was the "ammonia-soda method" soda-making process: for every ton of soda ash produced, 10 tons of waste liquid and slag should be discharged. The price of soda ash per to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/18B01D61/02B01D36/00B01D1/26C04B28/00C04B18/04C05G1/00C05G5/12C05G5/20C04B7/24C04B22/00
CPCB01J19/1862B01D61/025B01D36/00B01D61/027B01D1/26C04B28/00C04B18/0427C05C11/00C05G5/12C05G5/20C04B7/24C04B22/0006C04B14/06C04B2103/10C05D9/00Y02P40/10Y02W30/91
Inventor 关祥瑞张玉华陈建军张焕民刘胜亭郜学军王海兴
Owner 关祥瑞
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