Ultra-Lightweight Alumina Bubble Brick For Furnace Insulation Layer

Compared with ordinary alumina bubble bricks, our ultra-lightweight alumina bubble bricks have the following characteristics:

(1) Lower bulk density. Compared with ordinary alumina bubble bricks with 99% AI2O3 content and a bulk density of at least 1.5 g/cm3, ultra-lightweight alumina bubble bricks can reduce the weight of the furnace body sufficiently to save material, energy and cost;

(2) Better thermal shock stability compared to ordinary alumina bubble bricks with a bulk density of 1.5 g/cm3 and AI2O3≥99%;

(3) Extremely low thermal conductivity, only 30% of traditional products, At 400ºC, the thermal conductivity of hot surface of traditional alumina bubble brick with bulk density of 1.5g/cm3 and AI2O3≥ 99% is 0.78w/(m.K), while the thermal conductivity of furnace hot side of Rongsheng's

ultra-lightweight alumina bubble brick is 0.26w/(m.K), and its thermal insulation effect is 3 times of the traditional one. The use of ultra-lightweight alumina bubble bricks can make lower cold side temperatures under the same requirement of insulation layer thickness and greater energy saving, or thinner insulation layer under the same requirement of cold side temperature.

(4)It can be used directly in the working layer of the furnace, and has strong resistance to the erosion of hydrogen fluoride in the furnace for anode material.

Technical Data of Ultra-lightweight Alumina Bubble Brick

Application of Alumina Hollow Ball Brick

Alumina Bubble Brick is a kind of very important refractory material for resisting high temperature and special demands of positions for furnace and kiln, which is mostly used as insulating brick for insulation layer of furnace and kiln, and also can be used for service linings in manufacturing high-purity quartz for the electronics industry such as ceramic tile linings in gas turbines and backup linings in reactors.

    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