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碳化硅的用途 1有色金属冶炼工业的应用 利用碳化硅具有耐高温,强度大,导热性能良好,抗冲击,作高温间接加热材料,如坚罐蒸馏炉,精馏炉塔盘,铝电解槽,铜熔化炉内衬,锌粉炉用弧型板,热电偶保护管等. 2.钢铁行业方面的应用 利用碳化硅的耐腐蚀,抗热冲击耐磨损,导热好的特点,用于大型高炉内衬提高了使用寿命. 3.冶金选矿行业的应用 碳化硅硬度仅次于金刚石,具有较强的耐磨性能,是耐磨管道,叶轮.泵室.旋流器,矿斗内衬的理想材料,其耐磨性能是铸铁.橡胶使用寿命的5—20倍,也是航空飞行跑道的理想材料之一. 4.建材陶瓷,砂轮工业方面的应用 利用其导热系数.热辐射,高热强度大的特性,制造薄板窑具,不仅能减少窑具容量,还提高了窑炉的装容量和产品质量,缩短了生产周期,是陶瓷釉面烘烤烧结理想的间接材料. 5.节能方面的应用 利用良好的导热和热稳定性,作热交换器,燃耗减少20%,节约燃料35%,使生产率提高20-30%,特别是矿山选厂用排放输送管道的内放,其耐磨程度是普通耐磨材料的6—7倍. 碳化硅产品性能指标 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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The use of silicon carbide
1. Application in non-ferrous metal smelting industry
With its high temperature, high strength, good thermal conductivity and impact resistance it can be used for high-temperature indirect heating materials, such as distillation furnace, distillation furnace trays, aluminum electrolysis tank, copper melting furnace linings, zinc furnace arc plate and thermocouple protection tubes.
2. The application in iron and steel industry
With its anti-corrosion, thermal shock resistance, good thermal conductivity and other characteristics, it can be used for large blast furnace lining to increase service life.
3. The applications in metallurgical beneficiation industry
The hardness of silicon carbide is only next to diamond. Silicon carbide has a strong wear resistance, is the ideal material for making wear-resistant pipe, impeller, pump room, hydrocyclone and the ore lining of ore bucket.
4. The application in building, ceramics and wheel industry
With its thermal conductivity, heat radiation, high heat intensity characteristics, it can be used for making kiln sheet, which can not only reduce the kiln capacity, but also increase the installed furnace capacity and product quality and shorten the production cycle.
5. The application in energy saving
It can be used for making heat exchanger for its good thermal conductivity and thermal stability. The fuel consumption can be reduced by 20% and it saves fuel by 35%, thus it increases the productivity by 20-30%, its wear-resistant is 6-7 times the normal wear-resistant materials especially in the usage in mining pipeline.
Product performance index:
Item | Units | Indicators | |
SICRSIC | PCRBSC | ||
Density | g/cm3 | 2.60-2.68 | 3.02 |
Porosity | % | ≤ 17 | 0 |
Flexural strength | Mpa (20 ℃) | ≥ 90 | 220 |
Mpa (1200 ℃) | ≥ 100 | 230 | |
Coefficient of thermal expansion | 10-5 K | 4.8 | 4.8 |
Thermal conductivity | W / mk | 23 | 45 |
Young modulus | Gpa (20 ℃) | 240 | 420 |
Max. Operating Tem | ℃ | 1650 | 1320 |
SIC | % | ≥ 99 | 80 |
Si + SiO2 | % | ≤ 0.6 | 19 |
% | ≤ 0.1 | 0.15 | |
Acid resistance | Not reacting with any strong acid (except that when concentrated phosphoric acid at 300 ℃) | There are weak reactions with the strong acid reaction, and when the concentrated phosphoric acid at 300 ℃they has a strong reaction | |
Alkali | No reaction with the alkali | Reaction with alkali | |
| 型号 | 一级 | 种类 | 碳化硅 |
| 规格 | 块状 | 材质 | 碳化硅 |
| 粒度 | 5-8（目） | 适用范围 | 高级耐火材料、冶金、高级抛光材料 |
