BY ZHEN AN INTERNATIONAL SiC Industry Expert Team | 30+ years of industry experience
Silicon Carbide 88% Powder (also known as 88% SiC Powder) is a cost-effective industrial-grade functional material, favored by various industries for its balanced performance, competitive price and wide applicability. Different from high-purity silicon carbide powder (97%+ SiC content), it is positioned as an economical solution for general industrial applications, making full use of its high hardness, good wear resistance, excellent thermal stability and corrosion resistance, while avoiding the high cost of high-grade products. Below are the detailed applications of Silicon Carbide 88% Powder in the most popular industrial fields, combined with practical application cases to enhance credibility, including specific application scenarios, product forms, core advantages and real-world application effects.
1. Application in Wear-Resistant Ceramics
Wear-resistant ceramics is one of the core application fields of Silicon Carbide 88% Powder, which is mainly used in the production of economical, mid-low grade wear-resistant ceramic products, and its application scope is clearly distinguished from high-purity SiC powder.
High-purity silicon carbide powder (97%+ SiC) has extremely low impurity content, high sintered density and excellent high-temperature mechanical strength, so it is mainly used in high-precision, high-performance wear-resistant ceramics, such as precision ceramic seals, ceramic bearings, high-pressure ceramic valves and other products that require high density, high strength and good corrosion resistance. In contrast, Silicon Carbide 88% Powder has slightly higher impurities (Fe₂O₃ ≤1.0%, Free Carbon ≤1.5%), which leads to slightly lower sintered density and high-temperature strength, so it cannot be used for high-precision ceramic products, but it is perfectly suitable for cost-sensitive engineering wear-resistant ceramic scenarios.
Practical Case
A large mining enterprise in Shanxi, China, mainly engaged in coal mining and ore transportation, was facing the problem of frequent replacement of ore slurry pipelines-ordinary steel pipelines were severely worn by ore particles, requiring replacement every 6-8 months, which increased maintenance costs and affected production efficiency. After adopting ceramic liners made of Silicon Carbide 88% Powder (particle size 200 mesh), the service life of the pipelines was extended to 3-4 years, and the annual maintenance cost was reduced by about 60%. The ceramic liners, sintered with 88% SiC powder as the main raw material, have sufficient wear resistance to withstand the long-term erosion of ore slurry, and the cost is only 40% of that of ceramic liners made of 97% high-purity SiC powder, achieving a good balance between performance and cost.
Specifically, Silicon Carbide 88% Powder is widely used to produce ceramic liners, ceramic patches, composite ceramic pipe inner linings, slurry pump lining ceramics and low-cost ceramic wear plates. These products are widely used in mining, coal washing, metallurgy, chemical and other industries: in coal washing plants, the composite ceramic pipes made of this powder can withstand the erosion of coal slurry; in industrial equipment such as chutes and hoppers, ceramic patches made of 88% SiC powder can effectively resist the wear of materials, improving the service life of equipment parts.
The core advantage of Silicon Carbide 88% Powder in this field is its high cost performance: it can meet the basic wear resistance requirements of engineering applications, and its price is 30%-50% lower than that of high-purity SiC powder, which is the preferred raw material for refractory manufacturers and equipment maintenance enterprises pursuing cost control.
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2. Application in Refractory Materials
Refractory materials are the most widely used field of Silicon Carbide 88% Powder, which is used as a functional filler and reinforcing agent in various refractory products, suitable for medium-to-high temperature industrial kiln scenarios, and has obvious cost advantages compared with high-grade SiC powder.
In refractory production, Silicon Carbide 88% Powder is mainly added to refractory castables, gunning mixes, ramming masses and refractory mortars, which can significantly improve the key performance of refractory materials: its high thermal conductivity can promote uniform heat distribution in the kiln, reducing local overheating and extending the service life of the kiln lining; its excellent thermal shock resistance can prevent the refractory material from cracking and peeling under rapid heating and cooling cycles; its strong slag resistance can resist the erosion of molten slag and corrosive gases in the kiln, reducing the damage to the refractory lining.
Practical Case
A cement plant in Shandong, China, used ordinary refractory castables for the lining of its rotary kiln transition zone, which had the problem of frequent peeling and cracking due to poor thermal shock resistance, requiring shutdown maintenance every 3 months, seriously affecting production progress. After adding 88% SiC powder (325 mesh) to the refractory castable formula (adding amount 15%), the thermal shock resistance of the castable was significantly improved-after 30 cycles of 1100℃ water cooling, no cracking or peeling occurred. The service life of the kiln lining was extended to 12 months, the number of shutdowns was reduced by 75%, and the annual production efficiency was increased by 20%. Compared with using 97% high-purity SiC powder, the cost of refractory materials was reduced by 35%, which greatly reduced the production cost of the cement plant.
Specific application scenarios include cement rotary kilns, steelmaking ladles, glass melting furnaces and non-ferrous smelting furnaces: in steelmaking ladles, the gunning mixes made of this powder can quickly repair the damaged lining, improving the utilization rate of the ladle; in glass furnaces, it is used as a filler for refractory materials, enhancing the wear resistance and corrosion resistance of the lining.
Compared with high-purity SiC powder, Silicon Carbide 88% Powder does not have the ultra-high temperature resistance required for ultra-high temperature kilns (above 1800℃), but it can fully meet the performance requirements of most industrial kilns, and its cost advantage makes it the first choice for refractory manufacturers to reduce production costs without compromising product quality.
3. Application in Abrasive & Grinding Products
Silicon Carbide 88% Powder is a cost-effective raw material for abrasive products, suitable for general grinding and rough processing scenarios, and its application accuracy is clearly distinguished from high-purity SiC powder.
High-purity SiC powder has uniform particle size, high hardness and good sharpness, so it is mainly used for precision grinding and polishing, such as precision machining of metal parts, optical glass polishing and semiconductor material processing. Silicon Carbide 88% Powder has slightly uneven particle size and slightly lower sharpness due to its impurity content, so it is not suitable for precision grinding, but it is ideal for general grinding, rough processing and surface treatment.
Practical Case
A stone processing factory in Fujian, China, mainly produces natural marble and granite slabs, and needs a large number of grinding wheels for rough grinding and shaping of stone. Previously, the factory used grinding wheels made of high-purity SiC powder, which had high grinding efficiency but high cost, increasing the production cost of stone slabs. After switching to grinding wheels made of 88% SiC powder (100 mesh), the grinding effect was basically the same as that of high-purity SiC grinding wheels, and the rough grinding efficiency could reach 80% of that of high-purity products. At the same time, the cost of each grinding wheel was reduced by 45%, and the annual grinding material cost was saved by about 200,000 yuan. The grinding wheels made of 88% SiC powder are suitable for rough grinding of stone surfaces, can quickly remove surface defects and unevenness, and fully meet the production needs of the stone factory.
In the field of abrasive products, Silicon Carbide 88% Powder is mainly used to produce bonded abrasives and coated abrasives: bonded abrasives include grinding wheels, abrasive discs and grinding heads, which are widely used in grinding cast iron, natural stone, concrete, non-ferrous metals (aluminum, copper) and thermal insulation materials; coated abrasives include sandpaper, abrasive belts and abrasive cloth, which are used for rough grinding, derusting and deburring of workpieces. In addition, it is also used in polishing pastes and lapping compounds for rough polishing of metal parts and stone surfaces.
The core advantage of 88% SiC powder in this field is that it can provide stable grinding efficiency at a low cost, which is widely used in building materials, machinery processing, hardware manufacturing and other industries.
4. Application in Wear-Resistant Coatings & Metallurgical Additives
In addition to the above three core fields, Silicon Carbide 88% Powder is also widely used in wear-resistant coatings and metallurgical additives, which are high-utilization and high-demand application scenarios, with practical cases verifying its application effect.
Practical Case 1 (Wear-Resistant Coatings)
A petrochemical enterprise in Jiangsu, China, had the problem of serious wear on the surface of the fan impeller in its coal chemical production line-coal dust and corrosive gas eroded the impeller surface, leading to impeller replacement every 10 months. After spraying a wear-resistant coating mixed with 88% SiC powder (600 mesh) on the impeller surface, the wear resistance and corrosion resistance of the impeller were significantly improved. The service life of the impeller was extended to 3 years, and the replacement cost and maintenance time were greatly reduced. The 88% SiC powder in the coating acts as a reinforcing filler, which increases the surface hardness of the coating from 60 HRC to 85 HRC, effectively resisting the abrasion of coal dust and corrosive media.
Practical Case 2 (Metallurgical Additives)
A small and medium-sized steel mill in Hebei, China, used high-purity SiC powder as a deoxidizer in the steelmaking process, which had good deoxidation effect but high cost, increasing the production cost of steel. After replacing it with 88% SiC powder as a deoxidizer (adding amount 0.8%), the deoxidation effect met the national standard for ordinary carbon steel, and the oxygen content in the molten steel was controlled within 0.005%. At the same time, the cost of deoxidizer was reduced by 50%, and the annual steelmaking cost was saved by about 300,000 yuan. The 88% SiC powder reacts with oxygen in the molten steel to form silicon oxide, which not only reduces oxidation loss but also improves the fluidity of the molten steel, refining the grain structure of the steel.
In the field of wear-resistant coatings, Silicon Carbide 88% Powder is used as a functional reinforcing filler, added to anti-wear and anti-corrosion coatings, polymer composites and hardfacing materials. It can significantly improve the surface hardness, wear resistance and scratch resistance of the coating layer. In the field of metallurgical additives, it is used as a deoxidizer, alloy additive and slag former in steelmaking and foundry processes, meeting the basic requirements of general metallurgical processes at a low cost.
Summary
Silicon Carbide 88% Powder, as an economical industrial-grade functional material, has won wide recognition in various industries due to its balanced performance and competitive price. Its applications are mainly concentrated in wear-resistant ceramics, refractory materials, abrasive products, wear-resistant coatings and metallurgical additives, focusing on general industrial scenarios that require basic performance and cost control. The practical cases from mining, cement, stone processing, petrochemical and steelmaking industries fully verify its application effect and cost-saving value. Compared with high-purity silicon carbide powder, it gives up part of the high precision and high performance, but gains obvious cost advantages, which is the preferred raw material for enterprises pursuing cost-effectiveness. With the continuous development of industrial production, the application scope of Silicon Carbide 88% Powder will be further expanded, bringing more cost-saving solutions to various industries.
FAQ
Q1: What is Silicon Carbide 88% Powder?
A: Silicon Carbide 88% Powder (88% SiC) is an industrial-grade raw material with a minimum SiC content of 88%. It consists mainly of silicon carbide, with balanced impurities like silica (SiO₂) and iron oxides. It offers excellent hardness, wear resistance, thermal stability, and cost efficiency, making it ideal for general industrial applications.
Q2: What are the main applications of 88% SiC Powder?
A: It is widely used in:
- Wear-resistant ceramics: Liners, pipes, and pump components for mining & coal washing.
- Refractory materials: Castables and gunning mixes for cement kilns & steel furnaces.
- Abrasives: Grinding wheels, sandpaper, and belts for stone & metal processing.
- Wear-resistant coatings: Protective layers for industrial equipment.
- Metallurgical additives: Deoxidizer in steelmaking & foundries.
Q3: How does 88% SiC differ from 97%+ high-purity SiC?
A: 88% SiC has higher impurity levels (Fe₂O₃, free carbon) and lower sintered density. It is not suitable for precision ceramics, semiconductor polishing, or ultra-high-temperature (1800°C+) applications. It is a cost-effective alternative for standard industrial uses where extreme purity is unnecessary.
Q4: Is 88% SiC Powder suitable for food or pharmaceutical applications?
A: No. Due to its impurity profile, it is not recommended for food contact, pharmaceutical, or water purification applications. These require high-purity (99%+ SiC) grades.
Q5: What particle sizes are available for 88% SiC Powder?
A: Common sizes include:
- Coarse: 100–200 mesh (for ceramics & refractories).
- Medium: 325 mesh (for general abrasives).
- Fine: 600 mesh (for coatings & fine polishing).Custom sizes are available upon request.
Q6: What are the key advantages of using 88% SiC Powder?
A:
- Cost Efficiency: 30–50% cheaper than high-purity SiC.
- Performance: Balanced wear resistance, thermal shock resistance, and slag resistance.
- Versatility: Suitable for a wide range of industrial processes.
Q7: Can 88% SiC be used for polishing or mirror finishes?
A: It can achieve a smooth satin or semi-gloss finish. For mirror polishing or precision optics, high-purity (99%+) green SiC is required.
ZHEN AN INTERNATIONAL CO.,LIMITED
ZhenAn is an enterprise specializing in Metallurgical & Refractory products , integrating production, processing, sales and importing and exporting business.
We are focused on building a dedicated team of professionals across the globe. At ZhenAn, we are committed to provide complete solutions by delivering the "right quality & quantity" to suite our customer's processes.
Annual production and sales more than 150,000 tons. Our factory covering an area of 30,000 square meters, it has a complete set of modern production equipment, two large production bases including hydro-metallurgy, two key laboratories and a metallurgical materials testing center with dozens of senior researchers.
