Silica brick

￥500-1600

• BY:thomasen
• 0
• 4

Silica brick is an acid refractory material with good resistance to acid slag erosion. The load softening temperature is as high as 1640～1670°C. It is stable in long-term use at high temperature.

【Product introduction】

Silica bricks are mainly acid refractories composed of tridymite, cristobalite and a small amount of residual quartz and glass phases. The silica content is 94% or more. The true density is 2.35g/cm3. With acid slag corrosion resistance. Higher high temperature strength. The load softening start temperature is 1620 ~ 1670 °C.

 

【Features】

 

1.High temperature resistance

2.Low thermal shock stability

 

 

【Selection of refractories for carbon calciners, main considerations】

1. Temperature factor. The masonry of the electrode box heating wall, the fire box and the burner at the upper part of the closed roaster suffers from a medium-high temperature of about 1400 ° C and the influence of temperature change in each roasting cycle.

2. To withstand the quality of masonry and products. Therefore, a material with high mechanical strength, high softening temperature and good thermal shock resistance is selected, and the material can be satisfied with high-quality clay bricks. The furnace cover is made of insulating refractory material.

In combination with the above conditions of use of carbon calcining furnace, carbon product roasting furnace and graphitizing furnace, the refractory material of the current carbon kiln is mainly composed of Al2O3-SiO2 material. Such as silica bricks, clay bricks, high alumina brick products. In order to strengthen production, research is to use high-density silica bricks, magnesia bricks, and silicon carbide bricks. In some parts, such as coke oven doors, materials that are more resistant to thermal shock, such as high-quality clay bricks and andalusite bricks, are required due to long-term temperature changes.

【Physical and chemical indicators】

 

 

项目 Project	指标 Index
	GZ-95	GZ-94	GZ-93
SiO2 (%)      ≥	95	94	93
耐火度 Refractoriness（℃） ≥	1710	1710	1690
荷重软化开始温度 Load Softening Start Temperature(%)≥	1650	1640	1620
显气孔率 Apparent Porosity（%）≤	22	23	25
耐压强度 Compressive Strength Mpa ≥	30	25	20
真密度 True Density g/cm3 ≤	2.37	2.38	2.39

 

Founded in 1992, Rongxin Carbon is a manufacturer of refractory materials and electrode pastes. In the development of Rongxin, it introduced the world's leading manufacturing equipment and production processes to produce the quality and quality of refractory materials and electrode pastes. Improve a lot. With an annual output of 150,000 tons of refractory materials and 200,000 tons of electrode paste, the quality is stable and the price is reasonable. If necessary, please feel free to contact us.

Rongxin refractory bricks serve various provinces and cities nationwide. The main urban areas in Hebei Province are: Shijiazhuang, Handan, Tangshan, Baoding, Qinhuangdao, Xingtai, Zhangjiakou, Chengde, Zhangzhou, Langfang, Hengshui and other prefecture-level cities.