Process for the production of a neutral sodium silicate

By rationally proportioning and finely processing caustic soda and quartz sand, combined with an efficient melting reaction and filtration system, the problems of high energy consumption and significant environmental pressure in sodium silicate production have been solved, achieving efficient production of high-modulus neutral sodium silicate, and significantly improving product quality and efficiency.

CN122102146APending Publication Date: 2026-05-29HECHANG BAFANG (HUBEI) TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HECHANG BAFANG (HUBEI) TECHNOLOGY CO LTD
Filing Date
2026-03-03
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing sodium silicate production processes include high energy consumption and significant environmental impact from dry processes, while wet processes cannot produce high-modulus neutral sodium silicate, resulting in low production efficiency and poor product quality.

Method used

Sodium silicate is produced by melting caustic soda and quartz sand as raw materials, through flux melting and high-temperature reaction. Combined with microwave-assisted impurity removal, plasma surface modification, and ultrasonic purification, and with reasonable mixing temperature and gas protection, a clear and transparent neutral liquid sodium silicate is finally obtained through a three-stage filtration system.

Benefits of technology

The industrial production of high-modulus neutral sodium silicate has been realized, reducing energy consumption and environmental pressure, improving product quality and production efficiency, achieving a raw material utilization rate of 96% to 98%, and significantly improving product purity and transparency.

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Abstract

The application relates to the technical field of sodium silicate production, and discloses a production process of neutral sodium silicate, which comprises raw material preparation, ingredient mixing, melting reaction, cooling solidification, pressurized dissolution and filtration purification. The production process of the neutral sodium silicate innovatively realizes industrialized production of high-modulus neutral sodium silicate prepared by taking caustic soda and quartz sand as core raw materials, successfully breaks the technical bottleneck that traditional wet processes can only produce low-modulus alkaline sodium silicate, and simultaneously reduces the melting reaction temperature, greatly saves energy consumption, effectively avoids many defects such as huge energy consumption, large nitrogen oxide emission, prominent environmental protection pressure and high investment cost of kiln denitration in dry production, and has the advantages of energy saving, environmental protection, cost control, etc. while improving production efficiency and product quality stability, expands the production path of the neutral sodium silicate, and has important industrial application value and market prospect.
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