Our company located in yangquan city, shanxi province, china, and yanquan city is one of the Largest refractory material base in china. We are in position to supply various kinds of Refractory bricks, such as high alumina and fireclay bricks, insulating bricks etc With the catalogue as follows: 1. Fireclay brick 2. High alumina brick 3. Insulating brick 4. Unsintered phosphate brick 5. Al-c sliding plate 6. Nozzle 7. Hollowwares 8. Refractory mortar 9. Refractory castables 10.Other refractory material.
For hot blast stoveFor eaf roofFor general use Goods no.Ghha65,Ghha55,Ghha48,Rhs,Rh1,Rh2Al,75Al-1Al-2 Al2o3(%) min655548807565756555 Refractoriness( ) min179017701750185018001790179017901770 Refractriness under load 0.2 mpa( )150014701420155015301520152015001470 Apparent porosity (%) max_191922232322 Ccs (mpa)min4944.139.278.568.658.8544944.1 Shrinkage after reheating 1500x2h (%) max+0.1-0.4+0.1-0.4+0.1-0.4+0.1-0.4+0.1-0.4+0.1-0.4+0.1-0.4+0.1-0.4+0.1-0.4.
High Alumina Bricks for general uses are made from bauxite of super quality, bonding chamotte and additives. It is noted for good erosion resistance high refractorinessthermal shock resistance and accurate dimension. They were widely accepted in various kilns ,thermal equipment of metallurgy, petroleum, chemical industrysuch as high aluminum bricks for blast furnaces steel ladle and electrical furnace and so on .
Physical properties Brand SK-32 SK-34 SK-35 SK-36 SK-38 Index Refractoriness íµ 1730 1750 1770 1770 1790 bulk density g/cm3 2.15 2.2 2.3 2.35 2.52 Apparent porosity ¿Q% 24 24 23 23 23 Cold crushing strength ¿RMpa 30 35 40 45 65 Refractoriness under load (0.2MP) íµ 1350 1350 1400 1450 1550 Permanet liner change 1500íµ 2hrs% +0.2to-0.2 +0.2to-0.2 +0.1to-0.4 +0.1to-0.4 +0.1to-0.4 Thermal expansion at 1000 íµ 0.5 0.5 0.5 0.5 0.5 Fe3O4% 1.96 1.93 1.9 1.87 2 Al2O3% ¿R 42 48 55 60 65 SiO2 48-50 46-48 41-44 37-40 27-30
High alumina firebricks are classified according to the alumina content which is from lowest 48% to highest 95%, manufactured from mineral of bauxite, corundum, etc. By mixing, press-forming, drying, sintering and machining. High alumina bricks feature stable mechanical strength and thermal shock resistance, with high refractoriness of no lower than 1880¡æ, high alumina bricks are commonly used as refractory lining exposed to heat directly or backup insulation linings in various types of industrial kiln or laboratory furnace. Wooden pallets
Item AL-1 AL-2 AL-3 AL-4 Al2O3(%min) 75 65 55 48 Fe2O3(%max) 0.7 1.0 1.0 1.8 R.U.L 0.2mpa 1520 1500 1470 1420 Refractoriness 1790 1790 1770 1750 A?P 22 22 21 21 C?C?S Mpa 53.9 49 44.1 39.2
1.Description High alumina fire brick contain al2o3 more than 48%, which is made of high grade bauxite through high temperature calcinations. Its refractories is usually above 1770 ¡ãc. The main mineral components are corundum and mullite phases. It is a kind of neutral refractory material so that it enjoys excellent resistance to acid and alkali corrosion. According to al2o3 content, it can be divided into three degrees:the al2o3 content is more than 75%.The al2o3 content range from 60% to 75%.The al2o3 content range from 48% to 60%. 2.Feature 1. High-temperature endurable . 2.Good thermal shock resistance. 3.High cold crushing strength 4.Good resistance to abrasion and corrosion. 5.Good thermal spalling resistance. 6.High mechanical strength. 7.Good volume stability at high temperature. 3.Applications High alumina fire brick is used for building blast furnaces, hot blast stove, electric stove roof, ladle, blast furnace and reverberatory furnace, lining of rotary kiln and glass kiln and chemical industrial kiln. In addition, high alumina brick is widely used as regenerative checker brick of open hearth, pouring system with the plug head, nozzle brick, etc. On wooden pallets with plastic cover Pallite size:1.05*1.05m