Qingdao Yin Gang Ironmaking Co., Ltd. has existing blast furnaces.

Yin Gang Company has six blast furnaces, which are divided into six blast furnace divisions, including duty room foreman, forehearth worker, winch worker, plumber and maintenance worker. The charging of blast furnace and the operation of duty room are monitored and managed by the automation software of man-machine interface.

1# blast furnace was put into operation in may 1996, with a furnace capacity of 350m3. 10 * * furnace operated for 338 days, and * * * produced 3,564,800 tons of molten iron. The first generation furnace service was completed on April 6, 2006, and the overhaul was completed on May 29, 2006.

2 # blast furnace was put into operation on February 28th, 1997, with a furnace capacity of 350m3. The furnace operated for 8 years 154 days, and produced 2,925,400 tons of molten iron. On June 4, 2005, the first generation of furnace service was completed, and the overhaul was completed on June 23, 2005, and the furnace was officially put into production.

3 # blast furnace was put into operation in April 2000, with a furnace capacity of 420m3. By the end of 2006, * * * produced 3,379,900 tons of molten iron. The cumulative output per unit furnace capacity is 8047 tons/m3. At present, it is in the late stage of furnace service.

No.4 BF was put into operation on August 27th, 2002, with a furnace capacity of 500m3.

5 # blast furnace was put into operation on October 20th, 2004/KLOC-0, with a production capacity of 500m3.

6 # blast furnace was put into operation on February 22nd, 2004, with a production capacity of 500m3.

5# and 6# blast furnaces adopt many advanced technologies and equipment, and the hot blast stove adopts Kalujin top-burning hot blast stove, with the designed air temperature 1250℃. The top of blast furnace adopts infrared imaging technology; The fan adopts axial flow fan; Slag treatment adopts Tula process; Top suction dust removal technology is adopted in front of the furnace.

The preparation workshop mainly includes cast iron workshop, crown block workshop, Tulafa workshop, maintenance workshop, storage tank manufacturing workshop, preparation workshop and motorcade. Among them, the main job of the cast iron machine is to digest the backlog of molten iron in the blast furnace and ensure the smooth progress of ironmaking production; Tulafa is the equipment for granulating iron slag after water quenching during tapping of No.5 and No.6 blast furnaces.

The coal injection workshop is mainly to prepare pulverized coal for blast furnace. There are three coal mills in the coal injection workshop, which adopt medium-speed grinding technology to produce and collect pulverized coal at one time; Fuel tank merging and direct injection technology; High efficiency coarse powder separator; Safety injection detection device for bituminous coal; Long-life spray gun technology: new technologies such as new fluidized bed. The annual coal injection capacity is 700,000 tons, which can meet the coal injection capacity of 200kg /t blast furnace.

The gas workshop is mainly responsible for the operation management and dust removal management of the hot blast stove, and gas sampling and inspection. Each blast furnace is equipped with three hot blast stoves, and the hot blast stoves used in 1# and 2# furnaces are of swirl top combustion type; 3 # and 4# furnaces are internal combustion hot blast stoves; 5 # and 6# are Kalujin top-burning hot stoves.

Power workshop includes air compressor station, blower station, slag flushing pump station, central pump station, TRT power station, etc. , mainly to ensure the iron-making company's wind and water supply and the normal power generation and power supply of TRT. There are 7 air compressors, 8 blowers and 3 TRT power generation equipment in the power workshop. TRT power generation is an energy recovery device, which uses the residual pressure of the top gas to introduce the gas into the turboexpander to do work and drive the generator to generate electricity.

The raw material workshop is to transport the raw materials and fuel needed by each blast furnace workshop to each silo of the blast furnace through belts and adhesive tapes. There are 8 transfer stations and a simple chute, with 12 posts, and the total length of the belt reaches 8384m m.

Electrical maintenance workshop includes control room, high-voltage and high-voltage room and low-voltage post. Its main job is to be responsible for the high and low pressure, automatic control and stable operation of instruments and equipment.