Cr2O3 Steel Making Refractories Brick

Introduction:
The main components of aluminum chrome bricks are corundum and chromium trioxide, with low impurity content, stable high temperature chemical properties, high melting point, high hardness and high strength. Chromium trioxide is introduced into aluminum oxide.

Chromium trioxide and aluminum oxide can form high melting point compounds or eutectics with higher melting temperature with various oxides. For example, the melting temperature of the eutectic formed by chromium trioxide and silicon dioxide is as high as 1720℃.

Chromium trioxide and iron oxide can generate iron chromium spinel with melting point up to 2100℃, chromium trioxide and trioxide. Dialuminium can form a solid solution of aluminum and chromium; chromium trioxide and copper monoxide can form compounds with a melting point above 1600°C.

In addition, the viscosity of the slag can be greatly increased. Therefore, adding chromium trioxide to the refractory material can improve the slag resistance of the refractory material and reduce the structural spalling of the material to a certain extent

With the development of the past ten years, aluminum chrome bricks have made great progress, from the original single import, to domestic production, from imitation to innovation, from simple carbon black, zinc oxide kilns, to enamel and ceramics. , Used in glass and special chemical and metallurgical kilns. It shows that the application fields of aluminum chrome bricks are extensive and have great scientific research potential.
Since the raw material of aluminum chrome brick is waste residue, the cost of the brick is lower. It is mainly used in the high temperature parts of the kiln with lighter load, such as the upper part of the regenerator of the glass kiln, and the arch brick of the fire mouth of the non-ferrous metal smelting furnace.

It solves the problem that the existing technology uses large chromium slag blocks and manually chiseled them. The available part of the chromium slag is only about 50%; there are many natural pores, and during use, the melt or slag is corroded seriously; the service life is short . The raw materials are crushed, classified and ground, batched, formed, dried and fired. The finished bricks are produced after the kiln is discharged. The advantages are that the application range of chromium smelting slag is expanded, the aluminum chromium brick produced has a compact structure, high volume density, and low porosity; it can produce refractory products with various shapes, which is convenient for construction and use and has a long service life

Advantage:

1. Stable high temperature chemical performance,
2. High melting point
3. Large hardness
4. High strength and other characteristics

Packaging and shipping

Standard packing: waterproof inner packing + outer packing suitable for container transportation

Zhengzhou ANNEC Industrial CO., Ltd. was founded at Sep, 2003, and has been a NASDAQ listed corporation since 2011(Stock code: ANNC). ANNEC had become refractory industrial leader provide core service such as refractory production, technology of blast furnace and hot blast stove and EPC contract project in China. Now ANNEC sets up Academician workstations, the Provincial Engineering and Technology Center, Hot Blast Stove Research Centre, ANNEC (Beijing) Engineering Technology Co., Ltd and four production sites as subsidiaries. Yearly refractory output is 150 kt.

ANNEC is a national hi-tech company, and is accredited with ISO9001:2008 quality control system standards, ISO12001:2004 environmental control system standards, and GB/T28001-2011 HAZOPS. ANNEC has set up a thorough and effective management system with practical considerations for her employees and community, and is persistent in promoting employee self-value and product products. Based on the efforts, ANNEC is the recipient of the prestigious 2012 Zhengzhou Mayor Quality Prize.

ANNEC has capability of manufacturing refractories materials of fireclay, high alumina, silica and insulating bricks and corresponding unshaped refractories for hot blast stove. Meanwhile, ANNEC also produce various refractories for coking, sintering, casting house, torpedoes, iron ladles and steel ladles. ANNEC’s products have been sold to America, Japan, Korea, India, Iran, Vietnam, Turkey, Malaysia and Indonesia; get the customer's endorsement in the domestic and world. At the same time, ANNEC’s testing center shoulder examinations of products quality and tests of new product development.

ANNEC has been providing matched refractories of different type HBS for CERI, CISDI, WISDRI, CSGI and Kalugin，P•W，Danieli and SIEMENS VAI in their worldwide projects. ANNEC is awarded as excellent supplier by Baosteel, CSGI, and MCC etc.

ANNEC owns more than 50 patent technologies which include checker bricks with19 holes; 37 holes, 61 holes, ceramic burner of swirl-cutting top combustion hot blast stove, cone-column composited ceramic burner for top combustion hot blast stove, symmetric layout structure of hot blast stove, three section hot blast stove with independent structural. ANNEC was authorized to fulfill editing 7 standards of national and of industrial, including 《Silica Brick》, 《High Alumina Brick》， 《Refractory Brick for HBS Ceramic Burner》,《Refractory Standard Configuration of HBS System 》 and 《Energy Saving Technical Specification of Top Combustion HBS》.

ANNEC successively get awards such as “Chinese Outstanding S&T Innovation Enterprise”、“AAA grade Credit Enterprise”“Chinese Famous Brand Trademark China” “Provincial Famous-brand Product, Henan”“Provincial Credit Enterprise, Henan” “Zhengzhou Environmental Enterprise”

ANNEC owns core culture which is to make customer satisfaction, staff satisfaction and shareholder satisfaction; and continuously push forward technological development of HBS and progress of refractory technology by its great efforts, and gradually becomes one of the best professional suppliers in high temperature industry of global