A kind of production method of smelting furnace body lining material for sodium silicate processing

A production method and smelting furnace technology, applied in silicate, alkali metal silicate and other directions, can solve the problems of low strength, affecting the service life of furnace lining materials, etc., to achieve strong use safety, ensure efficient processing, good repeatability

Active Publication Date: 2021-07-13
ANHUI LONGQUAN SILICON MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carbon-containing refractory materials are widely used in refractory materials due to their excellent performance. However, in practical applications, this material has the problem of low strength during high-temperature use, which affects the service life of the furnace lining.

Method used

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  • A kind of production method of smelting furnace body lining material for sodium silicate processing
  • A kind of production method of smelting furnace body lining material for sodium silicate processing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Formula design: made of 10kg bauxite, 2.5kg wollastonite, 0.8kg asbestos wool, 0.5kg sucrose and 0.05kg lanthanum oxide;

[0036] (2) Mixing: Add the above-mentioned raw materials into a high-speed mixer, and mix for 10 minutes at 800r / min to obtain the mixture;

[0037] (3) Paste preparation: add 10kg of water to the mixture, and make paste through high-speed stirring;

[0038] (4) Heat treatment: heat the prepared paste to 120-125°C at a heating rate of 5°C / min and keep it warm until the water evaporates, and continue to heat at a heating rate of 5°C / min to 175-180°C and keep it for 0.5h , then immediately transferred to 70°C environment for 1 hour, then transferred to 0°C environment for 1 hour, and finally returned to 25°C naturally;

[0039] (5) Flour making: The solid obtained after heat treatment is made into coarse powder through a crusher, and then fine powder is made through a grinding machine to obtain the furnace body lining of the melting furnace.

Embodiment 2

[0041] Taking Example 1 as a comparison, set Example 2 in which phenolic resin 2123 is used as the binding agent instead of sucrose, and the rest of the operation steps are exactly the same as Example 1.

Embodiment 3

[0043] Taking Example 1 as a comparison, set up Example 3 in which the binding agent is sucrose derivatives instead of sucrose, and the rest of the operation steps are exactly the same as Example 1.

[0044] Preparation of sucrose derivatives: Add 70% ethanol dropwise to the mixture of 200g sucrose and 400g myristic acid until it is completely dissolved, then add 5g concentrated sulfuric acid dropwise, heat to reflux state and keep it warm for 4 hours, after the reaction, concentrate and recover under reduced pressure Ethanol, concentrate the residue and dry it in an oven at 75°C to constant weight, and then grind the dried solid into powder to obtain sucrose derivatives.

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Abstract

The invention discloses a production method of a smelting furnace body lining material for processing sodium silicate, relates to the technical field of smelting equipment, and comprises the following steps: (1) formulation design, (2) mixing materials, (3) paste preparation, ( 4) heat treatment, (5) milling; the present invention uses bauxite as the main material, supplemented with wollastonite, asbestos wool, bonding agent and rare earth oxide and makes the furnace body lining of the smelting furnace through the described process. The operation is simple and repeatable; the prepared furnace body lining can not only effectively block the heat loss in the furnace body, but also has excellent high-temperature-resistant mechanical properties, and is safe to use, thereby ensuring the efficient processing of sodium silicate and the production of silicon The purity of sodium bicarbonate.

Description

Technical field: [0001] The invention relates to the technical field of smelting equipment, in particular to a production method of a smelting furnace lining material for sodium silicate processing. Background technique: [0002] At present, the processing method of sodium silicate is mostly made by the reaction of quartz sand and sodium carbonate, and the melting temperature must reach the melting point of sodium carbonate (851°C), because the reaction can only occur in the molten state of sodium carbonate. The melting furnace has become an important equipment for sodium silicate processing, and it is required that the melting furnace body will not release substances that can participate in the reaction while providing the melting temperature. [0003] Usually, the furnace body of the smelting furnace is lined with a refractory layer, and the refractory layer is made of refractory materials. Carbon-containing refractory materials are widely used in refractory materials due...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/00C04B26/12C01B33/32
CPCC01B33/32C04B26/00C04B26/122C04B2111/763C04B2201/50C04B14/303C04B14/043C04B14/40C04B14/30
Inventor 赵生护汪旋田野
Owner ANHUI LONGQUAN SILICON MATERIAL
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