Application of sintered manganese ore and cold pressed pellets in the production of manganese-silicon alloy

Foreign iron alloy starting material into the furnace plant on the preparatory work very seriously, the raw material into the furnace needs to crushing and screening; particle size less than 6mm require sintering powder, with smelting maneuvers tend to sinter 20% to 55% Mine, improve the permeability of the charge to achieve better technical and economic indicators. China's ferroalloy production plants have also paid more and more attention to the organization of concentrates into the furnace. In 1987, Hunan Ferroalloy Plant built a 24m2 sintering machine to provide flux-type sinter for manganese- silicon alloy electric furnace. In 1994, Zunyi Ferroalloy Factory successfully produced agglomerated sintered manganese ore. Powdered manganese ore with a particle size of less than 6 mm can also be treated by cold-bonded pellets or cold-pressed pellets; cold-bonded or cold-pressed pellets are a province with a low investment and quick effect. Japan Steel Tube Co., Ltd. and Niigata Plant used manganese ore powder, iron ore fines, coke breeze and manganese iron slag to prepare a composite cold-pressed ball transfer silicon alloy production test according to the proportion of raw materials required for the production of manganese-silicon alloy, and obtained a power saving of 243kW. • h/t, 23kg/t of coke, and a 1.2% improvement in manganese metal recovery. In August 1983, a factory carried out a production test of adding 30% cold-pressed pellets on a 9000kV•A manganese-silicon alloy closed furnace. The results showed that the furnace condition was stable, the material was fast, the gas permeability was good, and the slag was not turned. not sting fire, coal gas recovery normal, the technical indicators have been improved. The pretreatment of the powdered manganese ore is not only to make full use of the manganese ore resources, but also to increase the utilization rate of the fine ore. More importantly, it is to improve the gas permeability of the charge, control the particle size composition of the raw materials, reduce fluctuations in product composition, and improve the electrical resistivity of the charge. The furnace condition and the maneuvering process are relatively stable, so that the mature and fixed process parameters are programmed into the program, and then the entire smelting process is controlled by an electronic computer, which ultimately achieves the purpose of improving labor productivity, improving operating conditions and saving energy.

  1. Elevator Traction Machine

    While there is a wide range of elevators to fit every need, they fall under three basic types: machine-roomless, gearless traction and geared traction.

    Traction elevators are the most common type of elevators. Elevator cars are pulled up by means of rolling steel ropes over a deeply grooved pulley, commonly called a sheave in the industry. The weight of the car is balanced by a counterweight. Sometimes two elevators are built so that their cars always move synchronously in opposite directions, and are each other's counterweight.




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