Special-shaped clay bricks. Those with one of the following classification characteristics are special-shaped clay bricks:
A. The mass is 2-15kg
B. Thickness dimension is 45-95mm
C. Size-to-size ratio not greater than 6
D. The total number of arcs and concave angles is not more than 2
E. The total number of ditches and houses is not more than 4
F. An acute angle >50° and ≤75°.
G. Without holes and holes.
Ordinary clay bricks are made of soft clay with strong plasticity and great dispersibility and a part of clay clinker. Generally divided into clay clinker and aged soil clinker brick. Their main high temperature performance refractoriness is higher than 1750 ℃ for the special grade, 1730-1750 ℃ for the first grade, 1670-1730 ℃ for the second grade, and 1580-1670 ℃ for the third grade. Multi-clinker clay bricks refer to products containing more than 80% clinker and less than 20% combined clay. Since most of the multi-clinker clay bricks are in a barren state, they are not easily deformed during the manufacturing process, which can ensure the external dimensions of the bricks, so that the fired products have ideal bulk density, mechanical strength, thermal shock resistance and high of refractoriness. All-raw clay bricks, also known as clinker-free clay bricks, are made of hard clay or pyrophyllite with low plasticity, weak dispersibility and little shrinkage. Since this kind of raw material has less inherent moisture, it can still maintain the original particle composition although it is given a certain amount of added moisture after pulverization. produce shrinkage.
Characteristics of clay refractory bricks
1. Chemical composition: The main components determine the quality and characteristics of the refractory.
2. Bulk density: The unit volume weight and the high density indicate that the density is good, the strength may be high, but the thermal conductivity may be large.
3. Apparent porosity: There are no specific requirements, but as a manufacturer, it is necessary to strictly control the apparent porosity.
4. Load softening temperature: also called high temperature load starting deformation temperature, this parameter is very important and marks the resistance of the material.
5. Thermal shock resistance: the ability to resist rapid temperature changes without being damaged.
6. Compressive strength: the ability to withstand (normal temperature) pressure.
7. Flexural strength: the ability to withstand shear pressure.
8. Linear change rate: also called reburning line change or residual line change, which refers to the change of volume expansion and contraction in the same temperature change each time. If each expansion and contraction is the same, we define such a linear change rate as 0.
Qualified blast furnace clay bricks are the phosphoric acid impregnated products after drying treatment, vacuum phosphoric acid impregnation and secondary low temperature firing, which are used to build the upper lining of the blast furnace body.
Factory and Machines
Huanya Refractory CO.,LTD has been established over 22 years,now we have become a group company with 10 factories,a series of refractory products can be manufactured,for example:Fire clay brick,high aluminum brick,insulation brick,all kinds of refractory castable used in the kilns construction,Brown corundum,ceramic fiber products, refactory balls, refactory aggregate,fire clay powder and so on.Here all friends from all over the world are welcome to have a visit of our factory and company,we are very glad to offer the best performance and high quality refractory materials and make the long-time cooperation with you and your company.
FAQ
Q:How to solve the quality problems?
A:If the products are not conform to customer samples or have quality problems, our company will be responsible to make compensation for it.
Q:Can we visit your factory?
A:Sure,welcome at any time,seeing is believing.
Q:Is your company accept customization?
A:We have own factory and excellent technical team,and we accept OEM service.
Q:How about your company's certification?
A:ISO9001 and Test Report,also we could apply other necessary certification.
Q. How you can control your quality?
For each production processing, we have complete QC system for the chemical composition
and Physical properties. After production, all the goods will be tested, and the quality certificate
will be shipped along with goods.
http://www.huanya-refractory.com