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Nitrate-free environment-friendly cast iron enamel low-temperature acid-resistant ground coat and preparation method thereof

An environmentally friendly, nitrate technology, applied in the field of enamel, can solve problems such as aggravating nitrogen oxides

Pending Publication Date: 2022-04-26
SINOPIGMENT & ENAMEL CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, although this document avoids the use of nitrates, it eventually aggravates the production of nitrogen oxides, which runs counter to the purpose of reducing or eliminating nitrogen oxides

Method used

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  • Nitrate-free environment-friendly cast iron enamel low-temperature acid-resistant ground coat and preparation method thereof
  • Nitrate-free environment-friendly cast iron enamel low-temperature acid-resistant ground coat and preparation method thereof
  • Nitrate-free environment-friendly cast iron enamel low-temperature acid-resistant ground coat and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Weigh the raw materials according to the mass parts of the following components:

[0041] Quartz 47.5kg, zero-water borax 26.6kg, soda ash 5.9kg, manganese oxide 1.3kg, cobalt oxide 0.7kg, calcium carbonate 4.8kg, sodium fluorosilicate 3.9kg, titanium dioxide 3.5kg, potassium feldspar 2.0kg, lithium carbonate 3.6 kg.

[0042] SiO in quartz 2 The mass proportion of ≥99.5%, SiO in potassium feldspar 2 The mass proportion of titanium dioxide is ≥71%, the mass proportion of titanium dioxide in titanium dioxide is ≥99.0%, the mass proportion of Co in cobalt oxide is ≥71%, and other raw materials are industrial-grade purity.

[0043] (2) Stir and mix the above raw materials evenly.

[0044] (3) Add the uniformly mixed materials into the melting furnace, and carry out melting under the condition of pure oxygen, and the melting temperature is controlled at 1230±10°C for melting.

[0045] (4) After the above materials are completely melted, the borosilicate glass body is...

Embodiment 2

[0048] The preparation process of this embodiment and embodiment 1 is basically the same, the difference is:

[0049] The mass parts of each component in step (1) are: quartz 47.5kg, zero-water borax 25.6kg, soda ash 6.2kg, manganese oxide 1.3kg, cobalt oxide 0.7kg, calcium carbonate 4.8kg, sodium fluorosilicate 4.0kg, titanium White powder 3.5kg, potassium feldspar 2.1kg, lithium carbonate 3.7kg.

[0050] In step (5), the process of rapidly cooling the melted borosilicate glass body is by tableting.

Embodiment 3

[0052] The preparation process of this embodiment and embodiment 1 is basically the same, the difference is:

[0053] The mass parts of each component in step (1) are: quartz 47.5kg, zero-water borax 24.8kg, soda ash 6.5kg, manganese oxide 1.3kg, cobalt oxide 0.7kg, calcium carbonate 4.8kg, sodium fluorosilicate 4.1kg, titanium White powder 3.5kg, potassium feldspar 3.2kg, lithium carbonate 3.8kg.

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Abstract

The invention discloses a nitrate-free environment-friendly cast iron enamel low-temperature acid-resistant ground coat and a preparation method thereof, and belongs to the technical field of enamel, the formula comprises the following components by mass: 46-50 parts of quartz, 24-27 parts of borax anhydrous, 5-7 parts of sodium carbonate, 1.2-1.4 parts of manganese oxide, 0.6-0.8 part of cobalt oxide, 4.5-5.5 parts of calcium carbonate, 3.5-4.5 parts of sodium fluosilicate, 3.0-4.0 parts of titanium dioxide, and 2.0-3.5 parts of potassium feldspar. And 3.5 to 4.5 parts of lithium carbonate. The raw materials are uniformly mixed according to the proportion and are molten under the condition of pure oxygen at 1230 + / -10 DEG C, and the firing temperature of the finished product is 740-760 DEG C. The formula does not contain nitrate, and the major technical problem that in the production process of existing cast iron enamel low-temperature acid-resistant ground coat, nitrogen oxide (NOx) gas is generated and discharged to pollute the environment is fundamentally solved.

Description

technical field [0001] The invention belongs to the technical field of enamel, and in particular relates to a nitrate-free environment-friendly cast iron enamel low-temperature acid-resistant bottom glaze and a preparation method thereof. Background technique [0002] Enamel enamel is mainly composed of feldspar, quartz and other refractory raw materials, borax, sodium nitrate, potassium nitrate, soda ash and other fusible chemical raw materials, as well as characteristic raw materials such as non-ferrous metal oxides. They are mixed in a certain proportion, melted at high temperature, and rapidly cooled into granules or flakes. shaped borosilicate glass. [0003] The introduction of nitrates (sodium nitrate, potassium nitrate, etc.) into enamel glazes as oxidants and fluxes has become a consensus in the industry, and it is an indispensable raw material for enamel glazes in traditional enamel theory. So far, there is no safe, colorless, reasonably priced oxidizing and fluxi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C8/06
CPCC03C8/06C03C2207/06
Inventor 汤上殷乐陈淑兰
Owner SINOPIGMENT & ENAMEL CHEM
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