Up-to-date Equipment
TISCO is an extra-big iron and steel complex mainly producing steel plates, equipped with technologic equipments for raw materials mining and processing, for steel smelting and rolling as well as for spare parts manufacturing, and It has now become the largest stainless steel enterprise, possessed of a whole stainless steel production process of smelting, refining, continuous casting, hot rolling and cold rolling.
Iron making system is composed of 7.63 m coke oven, 450 ㎡ sintering machine, 4350 cubic meters of blast furnace. Steel-making system is composed of patented technology of 90 tons K-OBM-S top-bottom blowing converter for stainless steel, 90 tons LF refining furnace for stainless steel, 90 tons VOD refining furnace, continuous casting machine and related supporting facilities. The new stainless steel system has formed a complete converter smelting stainless steel production line after completion of 160 tons EAF, 180 tons converter, 180 tons AOD furnace, 180 tons LF furnace, and 2150 straight arc continuous caster. Hot continuous rolling system possesses two production lines of 1549mm line and 2250mm line. Cold rolling system has 12 sets of advanced stainless steel rolling mill for both plate and strip, and more than 30 coil processing lines for various steel grades. At the same time, cold tandem rolling lines for silicon steel and stainless steel are built up separately as well.
450㎡ sintering machine
The main driving device adopts two-point gear-meshing flexible drive and AC frequency control of motor speed, uses industrial circulating water for make-up water, and removes dusts of raw materials, machine head and end, size stabilization system by dry electric or efficient bag de-dusters; The main exhaust fan adopts AC frequency conversion technology; Hot waste gas from feeding point which recycled by circular cooler and returned to sintering ignition holding furnace through the fan, is used for ignition and heat preservation, and the steam produced here are used for power generation; Desulfurization denitration acid making device has integrated five processes of desulphurization, denitration, de-dioxin, de-heavy metal and de-dust into one by activated carbon technology, and manufactures 98% sulfuric acid by acid making system; At the same time, a variety of pollutants in sintering flue gas are effectively removed by using micro porous activated carbon to adsorb filter dust, heavy metals and dioxins, and the wastes produced here are used for coal injection of blast furnace after screening and filtering, thus, the enrichment of hazardous substances is prevented and "zero discharge" of pollutants is realized.
4350m3 blast furnace
The furnace equips with TRT residual pressure generating device; Four tap holes with tilting troughs and complete TMT plugging mechanical equipments; Perfect oxygen enrichment, coal injection and safety device; Complete dust removal facilities for blast furnace top, tapping field and raw materials system, noise reduction facilities for furnace top even pressure relieving device and the cold wind vent valve; Blast furnace gas is purified by dry de-dusting and used for TRT power generation; adopts PW environmental friendly slag treatment technology.
CONARC steelmaking furnace
The furnace smelts steel alternately by two furnace shells with one set of power system and one set of top blowing oxygen gun devices, conductive cross arm and top-blown oxygen gun used for two furnace shells can rotate freely and can be chosen either cross arm or oxygen gun at any time according to the smelting process without any waste of time for the switch. CONARC furnace provides reasonable methods for steel smelting by either oxygen blowing or power with twin shells, which means the furnace can increase the adaptability to various materials by both converter of oxygen blowing and electric furnace of power.
180 tons AOD furnace
The furnace is designed by VAI, furnace body is manufactured by CFHI, and boiler system is transformed and manufactured by Hangzhou Boiler Company. Furnace tilting and oxygen lance system have pneumatic operation function under the accident state. Furnace shell is convenient for offline construction with a rapid replacement function.
180 tons VOD furnace
The furnace, designed by VAI, has double working positions with full hydraulic pressure drive equipment and can do online temperature measurement and sampling work by automatic temperature measurement and sampling devices; automatic detect combustion system of exhaust gas can prevent personnel poisoning and environment pollution by automatic ignition of carbon monoxide in exhaust gas; highly automated smelting has been realized through perfect secondary smelting automation system, mass spectrometer system and online TV system.
180 tons LF furnace
The electrode column of diamond cross section and copper plating steel conductive cross arm, which designed and manufactured by VAI, is an international patent technology with the most efficient energy utilization at lowest cost; Short net is plane layout, can better achieve the equilibrium of power supply; temperature measurement and sampling gun on the furnace cover can quickly complete temperature measurement and sampling; ladle furnace desulphurization and dephosphorization functions can be realized through the powder spraying system and spray lance system.
2150 mm continuous casting machine
The vertical arc continuous caster, completely designed by VAI, adopts advanced dynamic soft reduction and straightening technology with multipoint closely arranged roller, each device equipped with mould expert system, steel leakage prediction system, liquid level control system, Dyna Flex vibration system, online Dyna Width system, dynamic water distribution, ASTC roll gap dynamic soft reduction system, VAIQ advanced quality control system and etc. The CCMs can produce stainless steel slab with thickness of 180 mm and 200 mm, as well as carbon steel slab with maximum thickness of 280 mm. Among all CCMs, the maximum annual production capacity of 4# caster is 3.6 million tons.
2250mm Hot strip mill
The main rolling mechanical equipments are imported from Germany SMS, electrical equipment and control system are imported from Japan TMEIC company, annual design capacity of the mill is 4 million tons representing the highest level of traditional strip mill in today's world. Strip shape control system adopts CVC+ technology, and installs a coil box with belt edge insulation device and a rapid cooling device, in order to make sure good flatness of thin products and uniformity of strip property, at the same time it can satisfy the production and development requirements of multiphase, TRIP and other special steels. A mixed rolling technology of stainless steel and carbon steel is used for production process. Strong straightening machine equips a bending device with functions of on-load reduction, axial and radial adjustment.
Silicon steel cold tandem mill
Five-stand pickling and rolling production line, which designed by Japan Mitsubishi, adopts the most advanced control technology with stable process technology, high product quality and high yield, is a large, continuous, compact, efficient and environment friendly production line with a maximum rolling speed of 1200 m/min and annual output of 1 million tons.
Stainless steel cold tandem mill
Five-stand tandem mill is designed especially for continuous operation by Germany SMS company, the line integrates rolling, annealing, pickling, flattening, straightening and side cutting, and products can be rolled by one pass with high efficiency and energy saving. Its annual capacity is one million tons for 300 and 400 series stainless steel strip.
