Low-cost long-life basic refractory material for nonferrous smelting and preparation method thereof

By optimizing the raw material composition and preparation process of refractory materials for non-ferrous smelting, and using inexpensive industrial-grade alkaline minerals and functional additives, the problems of high cost, short life and poor environmental performance of existing refractory materials have been solved, enabling low-cost, long-life and environmentally friendly refractory materials to be used in high-temperature corrosive environments.

CN122277267APending Publication Date: 2026-06-26ZHENGZHOU RUITAI REFRACTORY MATERIALS TECH CO LTD
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Patent Information

Application Number
CN202610457067.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-08
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing alkaline refractory materials are costly, have short lifespans, and poor environmental performance in non-ferrous smelting processes. They are particularly susceptible to damage in high-temperature, high-sulfur, and high-alkali metal environments, and pose a risk of hexavalent chromium pollution.

Method used

Based on inexpensive industrial-grade alkaline minerals such as calcined dolomite and sintered magnesia, and combined with functional additives such as silica powder, bauxite clinker, silicon carbide and calcium fluoride, refractory materials are formed through optimized proportions and preparation processes. These materials enhance high-temperature stability and corrosion resistance, and avoid heavy metal pollution.

Benefits of technology

It has achieved a low-cost, long-life refractory material with strong adaptability, significantly reduced raw material costs, extended service life, and avoided hexavalent chromium pollution, making it suitable for high-temperature corrosive environments.

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Abstract

The invention relates to a low-cost long-life basic refractory material for non-ferrous metal smelting, and relates to the technical field of non-ferrous metal smelting. The low-cost long-life basic refractory material for nonferrous smelting is prepared from the following raw materials in percentage by mass: a basic basic component, a functional additive and a binding agent, the basic alkaline component comprises 40%-60% of calcined dolomite and 20%-40% of sintered magnesia; the functional additive comprises 3%-8% of silica powder, 5%-15% of bauxite clinker, 2%-6% of silicon carbide and 1%-5% of calcium fluoride; the calcined dolomite is a decomposition product obtained by calcining CaMg (CO3) 2 at 1000 DEG C to 1200 DEG C. The basic refractory material disclosed by the invention is low in cost (30-50% lower than that of a traditional magnesite-chrome brick), the service life of the basic refractory material in a copper, lead and zinc smelting high-temperature corrosion environment is remarkably prolonged, and the basic refractory material is suitable for parts such as nonferrous smelting furnace linings, chutes and flues and has remarkable industrial application value.
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