Ferromanganesesmelting have blast furnace ferromanganese, electric furnace high carbonferromanganese, manganese-rich slag, silicon manganese alloy smelting andelectrolytic manganese production process.According to metal powder supplier, blastfurnace ferromanganese smelting with carbon heating agent and reducing agent,in the blast furnace, manganese and iron oxides reduction, ferromanganese slagand gas generation, a series of complex physical and chemical process. Theblast furnace is the earliest adopted method of high carbon ferromanganeseproduction. Blast furnace ferromanganese smelting raw materials used is mainly( manganese carbonate ore, oxidized ore, roasting ore and sinter ) (metallurgical coke, coke, coal tar and coke ) and the flux ( limestone or lime,dolomite and other ). The method Outdoor Cooling Vest factory using coke as reducing agent and heat source,dolomite or limestone as flux, use the blast furnace to produce high carbonferromanganese.
Ferromanganese blast furnace smeltingprocess is similar with the blast furnace iron making, the occupation hazards inits production process is also similar. Dust, in the ore transportation,storage, classification and crushing all produce manganese dust, coke dust,lime dust, dolomite dust; blast furnace charging, discharging, slag, smelting,slag generated in the operation process of manganese dust, coke dust, slag dustand so on; repair may be exposed to fire material dust. Physical factors, thewhole production process are with high strength mechanical noise and airdynamic noise. Ferromanganese is produced in the process of high temperatureheat radiation parts of a blast furnace body and a slag treatment process ofslag entrance. In addition, workers are more prone to high temperature burn,scald.
Chemical poison, blast furnace smelting process resulting in toxicchemical manganese smoke, lead, carbon monoxide, carbon dioxide, nitrogendioxide, sulfur dioxide and others. Ferromanganese alloy furnace workers mightbe exposed to the harm of lead, and lead in air of workshop content and orefurnace lead emissions and protective effects are closely related.The raw materials of electric furnace producehigh carbon ferromanganese process is manganese ore ( manganese oxide ore,sinter, roasting and artificial manganese rich slag etc.), coke and limestone.Electric furnace method is based on the electric energy as heat source, thecoke as reducing agent. High carbon ferromanganese electric furnace is containsa small amount of silicon, phosphorus, sulfur impurities in carbon threeelement alloy of ferromanganese, manganese and iron is around 92% in ferromanganese,containing 6% to 7% carbon. High carbon ferromanganese electric furnace forsteelmaking deoxidization agent, desulfurizer and alloy additives. With lowcarbon ferromanganese production technology progress, high carbonferromanganese and also can be applied to producing medium and low carbonferromanganese. Electric furnace smelting high carbon ferromanganese iscontinuously performed, that continuous feeding smelting, timing tap.
Accordingto the manganese ore grade and different slag basicity controlling different,in electric furnace production of high carbon ferromanganese with flux method,melting method and less flux method have three kinds. High carbonferromanganese electric furnace process mainly have ingredients, feeding,furnace maintenance and iron casting.Occupation hazards identification,manganese ore, coke and limestone and other bulk raw materials, transport,feeding in manganese powder and bulkraw materials mixed dust, noise and vibration. Electric furnace smelting, inthe process of producing manganese and slag may generated manganese smoke, leadsmoke, nitrogen oxides, carbon dioxide, carbon monoxide and other toxic gas andslag dust, high temperature, thermal radiation, electromagnetic radiation,ultraviolet radiation, noise and vibration. In the operation process of auxiliaryequipment exist toxic gases, heat radiation, noise and other hazards. Blastfurnace maintainer may contact refractory dust and noise.
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