High-Quality Drainage Agent Raw Materials for Refractory
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Drainage agent
Product description
According to the iron and steel industry in the process of continuous casting the performance of existing drainage agent bad to open rate since the ladle is not high, burn oxygen excessive, even cause continuous casting process interrupt problem, our company developed the development and production of high flow initiator series products. It is made by the high quality imported GeKuangSha, refined quartz sea sand and high refractoriness material composition, with good fluidity, more than major and fast speed, the appropriate sintering thickness, resistance to erosion and penetration, molten steel ladle artesian free-opening rate above 98%, and other characteristics, greatly to reduce the labor intensity of recognized, reduce oxygen blowing drainage, improve the quality of steel products, ensure continuous casting process smoothly.
Drainage agent series physical and chemical instructions:
model | SiO2 AL2O2 Fe2O2 MgO Cr2O2 Particle size Water (%) |
LF-Si-1 | 92～98 -- -- -- -- 0.315～2.5 <0.5 |
LF-Si-2 | 86～92 <5 <3 <3 1～5 0.15～2.5 <0.5 |
LF-Si-3 | 75～84 3～10 <3 <5 -- 0.315～2.5 <0.5 |
LF-Cr-1 | 23～28 9～14 18～23 6～10 32～38 0.15～2.0 <0.5 |
LF-Cr-2 | 35～40 <8 13～19 5～8 28～33 0.15～2.0 <0.5 |
LF-Cr-3 | 15～20 10～15 16～22 7～11 38～44 0.15～2.0 <0.5 |
LF-Mg-1 | 70～80 -- -- 10～20 -- 0.15～2.0 <0.5 |
Applicable scope General silicon, magnesia drainage agent used in the short flow steelmaking process; Ordinary chrome conduction agent used in refining quality time less than 45 min or not scouring the steelmaking process; Refining chrome conduction agent used in quality LF, VD, RH and refining the longer steelmaking process; Chromium stainless steel mass flow initiator used in steel stainless steel series; Thin flow initiator suitable for various kinds of thin sections of steelmaking process.
- Q: What are the new types of refractories? What are the characteristics? Their applications and developments?
- Special materials often use AZS brick, corundum brick, magnesia chrome brick, silicon carbide, silicon nitride bonded silicon carbide, nitrides, silicides, sulfide, boride, carbide and other non oxide refractory materials; calcium oxide, chromium oxide, alumina, Magnesium Oxide, beryllium and other refractory materials. Often used insulation refractories are diatomite products, asbestos products, insulation panels and so on. Unshaped refractory materials commonly used are fettling, refractory ramming material, refractory castable, refractory plastic material, refractory clay, refractory gunning, refractory cast material, fireproof coating, lightweight castable, mud etc..
- Q: What can red stone refractory do?
- In severe cases, the resistance to high temperature without softening down the Celsius temperature. Refractory materials are widely used in metallurgy, chemical, petroleum, machinery manufacturing, silicate, power and other industrial fields, the largest amount of metallurgical industry, accounting for 50% ~ 60% of the total output. Chinese use less impurity clay in more than 4000 years ago, firing pottery, and have been able to cast bronze. In the Eastern Han Dynasty (AD 25 ~ 220) have been used to make clay refractory kiln firing porcelain material and sagger. At the beginning of twentieth Century, the development of refractories to high purity, high density and ultra high temperature products, while developing completely without firing, small consumption of unshaped refractory materials and high refractory fiber (160 for industrial furnace refractories above 0 DEG C). The former, such as alumina refractory concrete, is often used in large chemical plants, ammonia synthesis plant, two - stage reformer furnace wall, the effect is good. Since 50s, the rapid development of atomic energy and space technology, the development of new energy technology, requires the use of special refractory material of high temperature resistance, corrosion resistance, thermal shock resistance, erosion has excellent properties, such as melting point above 2000 DEG C, oxide refractory compounds and high temperature composite refractory materials.
- Q: What is the limit of fireproof rolling shutter?
- Fireproof rolling shutter door is a kind of fire protection and heat insulation facility which is suitable for the large openings of buildings, having a certain effect on the design and installation. Fire shutter doors are widely used in fire partition of industrial and civil building. It can effectively prevent the spread of fire, to protect the safety of life and property. It is an indispensable modern building fire facilities. According to the national standard 14102-2005 GB standard, the provisions of 14102-2005 GB specify that: If fire resistance limit of fire resisting shutter is no less than 3 hours, it is AAA fireproof rolling shutter. Therefore, the fire resistance limit of AAA grade fireproof rolling shutter should be 3 hours.
- Q: how about the performance of aluminum silicate fire proof thermal insulation?
- aluminum silicate fire proof thermal insulation board has a good performance. it is a artificial board that separates the wood and plant fiber by mechanical and chemical methods and mixed the adhesion agent and water-proofing?agent, molding by high temperature and high press. the density of fiber. tha above information is coming from the Internet and it is just for reference.
- Q: Can polystyrene foam color steel plate be used as decorative fireproofing material ?
- No, only non-combustible product can prevent fire. Most polystyrene foam boards are flammable which cannot prevent fire. Polyphenyl can only retard flame, highest fire?retardant fire?rating being B1 level. Under the same conditions, fireproof performance of polystyrene foam board will be better because most extruded sheets are made by recycling materials and contain much more impurities which will affect flame resisting property. The second reason is that high temperature in extruded sheet manufacturing technique will decompose part of flame retardants. For B1 level extruded sheet, it is difficult to reach 30 burning oxygen index, while for B2 level, it is hard to reach 32. So polyphenyl board is safer.
- Q: What is the importance of silicon powder in refractory processing?
- in amorphousness it is mainly the mobility
- Q: What kind of refractory materials can withstand 1500℃ when processing briquette stove core and meanwhile cost less?
- Alkali resistant castables cost the least.
- Q: What are the commonly used admixture for alumina-magnesia refractory? What are the impacts on its performance?
- 2, form Mg-SiO2 coagulation and combination, CA cement bond? Bricks can generally be made by combing with phenolic resin, castable use 1, combined with silicon powder; 3, can also combined with brine MgCl is binding agent
- Q: Who knows about the grade C fireproof door materials?
- There are no differences in the interior materials of the grade A , B and C fire doors, they all use fire?rock?wool?boards. The only difference is the thickness of built-in fire rock wool boards. The rock wool boards' thickness of grade A fire doors is 52 mm, that of grade B is 46mm, and that of grade C is 40 mm.
- Q: What's the refractory material in common use currently?
- (1) Alumina-silica refractory brick: Except the transition band, hot end and firing zone of the rotatory cement kiln, it can be applied to the whole burning system of the precalcining kiln, such as the fixed wall lining, wicket, cooling machine, tertiary air duct, burner, etc. It mainly includes alkali-resisting brick, high alumina (anti stripping) brick, silica-mullite brick, etc. (2) Basic refractory: For the upper transition band close to the part of burning zone and the burning zone, its inner lining can endure the highest flame temperature of 2000℃ and material temperature of 1350℃-1400℃, and it also has to withstand the permeation of sulfur and alkali compounds, permeation, thermal shock and oxidoreduction of hot-melt clinkers (liquid phase), mechanical stress of elliptic cylinder deformation, etc. Therefore, inner linings are the most demanding parts to withstand stress, and only basic refractory can meet with requirements under this working condition. (3) Fireclay insulating refractory: Its microstructure has notable characteristics of high porosity, large pore size and thermal insulation performance. For its low volume density and light weight, it is usually referred to as lightweight refractory. Fireclay insulating refractory product has great varieties, and it is usually classified and named according to its chemical and mineral compositions or production raw materials, and it is also classified according to its operating temperature and material form. Currently, the most used main thermal insulation material for the precalciner kiln system at home and abroad is calcium silicate board; besides, light weight castable and insulating fire brick are increasingly used year by year. Other thermal insulation materials are mainly ceramic fiber products.
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High-Quality Drainage Agent Raw Materials for Refractory
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