【正文】 he status of furnace, but also work to improve the hearth, Detailed Summary VI and is stable antegrade blast. And then introduced the basic process technology used, under the milling device to the distance from the blast furnace, coal stores, injection tank placement differences in the thickness pipeline injection, injection pressure is high or low concentrations of the size of transmission as well as different forms of spray, you can have a direct injection, indirect injection。 string injection cans and cans of injection。 Explorer injection, multibranch injection。 highpressure injection, pressure injection。 dense phase injection, dilute coal injection and oxygen injection machine, injection machine and other conventional forms of injection. Profile describes some of the more mature industrial production processes: 1, Germany KvTTNER process。 2, the United States armco (ARMCO) process。 3, Japan39。s Sumitomo processes。 4, flow Kawasaki, Japan。 5, Luxembourg Paul Wurth process。 6 , mixedtype process。 7 British Steel Union Coal particle injection process. Again after a brief introduction of several new coal technology, including: 1, the volume of oxygenrich large coal technology。 2, the use of a large number of plasma pulverized coal injection。 3, pound injection techniques。 4, tablets coal injection technology. Finally, in the first part of the status quo of China39。s coal injection technology, more than ten years into the technology progress in China and problems, but also the development prospects of China39。s outlook for blast furnace. The second most of the major coal injection on blast furnace automation control package. First point of injection and detection process carried out on the layout, including the choice of three cans of string emission requirements can injection valve, fluid valve, charge pressure valve are pressure valves, fire nitrogen valve, conical valve under , Detailed Summary VII the cone valve, under the coal feeder and the distribution of the ball valve were pared and described in detail on the installation drawings indicate the location, but also all the necessary measuring equipment (such as pressure, temperature, weight, gas content, etc.) , the required number, a description of the installation location. And then in the graph on the basis of the control process described injection. First introduced the basic mode of operation: fully automatic operation, manual operation, and maintenance operations, and then is a major operation carried out by Overview (including coal from the coal inverted position to the intermediate tank can control, to the pulverized coal injection in the middle tank cans cans back control from the injection of pulverized coal to blast furnace tuyere spray cans of control, stop the blast furnace pulverized coal injection control, security control procedures for the chain), and finally a detailed description of the specific operation. Tank feeding the middle: the middle of the preconditions can feed tank for the middle must be an empty signal, the pressure must be less than , emission valves in the open status, filling pressure valve, fluid valve, cone valve and the valve under the cone in the off state, intermediate between the cans and the cans are injection valve in the off state。 to meet the above conditions can operate in open coal was under the cone valve position, open the middle of the coneshaped tank valve, Bleeding valve clearance warehouse coal, the coal flow position of valve, the middle tank full feed signal when the following closing of coal flow valve position, the valve emission coal warehouse, customs warehouse under the cone of pulverized coal valve off the middle of the coneshaped tank valve, coal from the coal warehouse cans down to Detailed Summary VIII the middle of the order of the end cans, cans in the middle of full feed position. Feed tank injection: injection volume of the tank showed that the lower limit of coal, to allow automatic feeding signal injection tank pressure settings to reach the middle tank full feed。 inverted cans, Bleeding Tundish valve clearance, the tank filling the middle pressure valve, intermediate pressure tank and the injection tank is less than set value, the filling valve shut down, open the two cans were pressure between the valve and open the next among the tank valve cone, the conejet on the tank valve, open the middle fluid tank valve, the middle tank feed air signals, the following operations, clearance of middletank flow valve, clearance under the middle of tank valve cone, the coneshaped tank clearance injection valve, filling tank clearance intermediate pressure valve, intermediate clearance between tank and tankpressure injection valve, the valve emission Tundish, pulverized coal injection in the middle tank to tank down the order can be pleted. Injection control: a prerequisite for blast furnace to be allow injection signal injection tank of not less than the minimum level to meet the security requirements of the chain, check the PCI manual control valves on the road, and entered into the normal。 injection control , the injection valve, the safety valve, the injection of coal under the tank ball valve, open valve injection fluid can start to feed. Finally, there is cessation of injection control (injection instructions issued to stop the termination of the antitank to operate, clearance under the coal injection tank ball valve, stop feeder off safety valve, injection valve clearance) and the three cans and the injection pipe pressure, temperature control of the security Detailed Summary IX chain. The third part mainly used on a variety of measuring equipment (including level, pressure, temperature, oxygen content, carbon monoxide content and weight mea