Zhengzhou Sijihuo Refractory Co., Ltd.
Zhengzhou Sijihuo Refractory Co., Ltd.
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Brown corundum,usually called emery,is made of bauxite,carbon materials and iron dust.Put the three kinds of raw materials in the electric furnace and then melt,reduction,Finally get the brown corundum.The chemical composition of the brown corundum is Al2O3,and the content is 94.5%-97%,the other part contains a small amount of Fe,Ti and so on.
Physical properties:Crystal form trigonal system
Chemical properties:amphoteric and react with acid,slightly acid corrosion in aqua regia and hydrofluoric, react with alkali,the Knoop hardness 2000-2200kg/mm2,Mohs hardness 9.0,color dark brown and after burning,it gets to be deep blue,the melting point 2250C and the highest use temperature 1900C.
The main component of the brown corundum is alumina,the content of the alumina determines the degree of the quality,the less content of the alumina,the lower hardness.Higher toughness than SIC,the bulk density≥3.85g/cm3.high refratoriness up to 1850C.
| Item | Specification | Al2O3 | Fe2O3 | SiO2 | SiO2 | Magnetic matter | |
| 4#-80# | ≥95% | ≤0.3% | ≤1.5% | ≤3.0% | ≤0.05% | ||
| F | 90#-150# | ≥94% | ≤0.3% | ≤1.5% | ≤3.0% | ≤0.03% | |
| 180#-240# | ≥93% | ≤0.3% | ≤1.5% | ≤3.5% | ≤0.02% | ||
| Abrasives | 8#-80# | ≥95.0% | ≤0.2% | ≤1.2% | ≤3.0% | ≤0.05% | |
| P | 90#-150# | ≥94.0% | ≤0.2% | ≤1.2% | ≤3.0% | ≤0.03% | |
| 180#-240# | ≥93.0% | ≤0.3% | ≤1.5% | ≤3.5% | ≤0.02% | ||
| W | 1#-63# | ≥92.5% | ≤0.5% | ≤1.8% | ≤4.0% | - | |
| Refractory material | Section sand | 0-1mm 1-3mm 3-5mm 5-8mm 8-12mm | ≥95% | ≤0.3% | ≤1.5% | ≤3.0% | - |
| 25-0mm 10-0mm 50-0mm 30-0mm | ≥95% | ≤0.3% | ≤1.5% | ≤3.0% | - | ||
| Fines | 180#-0 220#-0 320#-0 | ≥94.5% ≥93.5% | ≤0.5% | ≤1.5% | ≤3.5% | - |
Application:
As corundum has excellent high temperature properties and mechanical strength and other properties, which is widely used in metallurgy, machinery, chemicals, electronics, aviation and defense and many other industrial fields. Its main use is as follows.
due to high temperature resistance, corrosion resistance, high strength and other properties, it is used as steel sliding nozzle, smelting rare precious metals, special alloys, high purity metal, glass wire drawing, the production of laser glass crucible and utensils; , Such as refractory materials, ceramics, ironmaking blast furnace lining (walls and tubes); physical and chemical utensils, spark plugs, heat and oxidation resistant coating. SiO less than 0.5% of the low-silicon sintered corundum brick is carbon black, boron chemical, chemical fertilizer, ammonia synthesis furnace and the furnace for the special furnace lining.
Zhengzhou Sijihuo Refractory Co.,was founded in 2000.After years of development,it has become a backbone enterprise in the production of refractories used in the fields of metallurgy,building materials,electric power,and chemical industry.The company has fixed assets of 170 million yuan and 158 employees, including 26 technical staffs. It has two subsidiaries, eight departments and 12 functional departments, six production plants, a R&D center and a test center.With the excellent production equipment complete detection means and strong technical forces,the company can achieve annual production of 45,700 tons,with the output value of 280 million RMB.In the year of 2010,we invested over 10 million RMB to build the advanced level of high-temperature aluminum-vanadium sintering production line in China,which implements strict control from raw materials to the products,to ensure the production quality,in addition,a domestic first-class provincial enterprise technology center was founded here.
1. FEDEX/DHL/UPS/TNT for samples.
2. By Sea for batch goods.
3. Customers specifying freight forwarders or negotiable shipping methods!
4. Delivery Time:3 days for common shape samples;15 days for special shape samples.Within 30 days for batch goods.
Zhengzhou Sijihuo Refractory CO.,LTD has been established over 17 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.
Overview on Factory:
Professional Machines:
Our products have passed the ISO9001 Quality management system certification and also got the certification of CNAS.
1.Timely response
Timely response to your inquiry, multiple choice recommendations based on your demand,quickly respond mails and provide solutions.
2.Sample evaluation
Price of refractory brick sample and trial order are accepted for the quality evaluation
3.Strict quality control
Arrange production on time and control quality strictly.
4.Shorter delivery time.
Book the earliest vessel or plane to guarantee the delivery time.
5.Professional Services
Provide all the detailed news and pictures from order to delivery;Offer relative export documents and original certificate if needed;Warm and considerable after-sale service.
1.You are a manufacture or a trading company?
We are truly a manufacture,we not only can provide the high quality products with the best price,but also can offer the best pre-sale service and after-service.
2.What kind of product can you offer?
Our company can offer a series products for kiln construction.For example:Refractory brick,refractory castable,refractory materials,ceramic fiber products.
3.Can your company provide samples or can we have a visit to your factory?
Of course,samples are available,and you are welcome to visit our factory at anytime.
4.Why we choose the product of your company?
That is good question,we are in the Xinmi City of Henan province,China,the largest refractory material base of the country,so the price and quality of the product can be guaranteed
5.What is the warranty for the refractory brick?
For all the refractory bricks,we have 1 year warranty,if any quality problems on our side during in this period,we will take responsibility of the cost of the shipment and the replacement.