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Qualified raw materials such as lime and coke are transported into the factory by truck and stored in the corresponding raw material shed. Lime and coke are added to the batching trolley respectively, weighed on the electronic scale, and then transported to the workshop of the second floor of the electric furnace by the trolley, and the material is added to the furnace manually.
The charge enters the calcium carbide furnace, and the 11KV power supply introduces the current into the furnace through the three-phase electrode of the transformer. The electrode generates arc heat between the charge and the bottom of the furnace, and then transmits it to the furnace filled with the charge. Through arc heat and resistance heat, the mixed material can be reduced to calcium carbide. During the entire smelting process, the voltage level and current intensity on the electrode are set according to the smelting process parameters, and the values of voltage and current are different in different periods, that is, the power in the input furnace is different, the electrode is inserted in the furnace charge, and the gas escapes evenly from the entire material surface. The uniformly mixed charge is added to the furnace in small batch with the drop of the charge surface, so that the charge surface in the furnace maintains a certain height, and the shape of a flat cone is displayed around the electrode. When the liquid calcium carbide reduced in the furnace is stored to a certain extent, calcium carbide is released from the oven.
Under the prescribed power supply system, the electric furnace is fired once at an average interval of 1 hour, 24 furnaces a day, and the amount of calcium carbide is about 0.7t. After the calcium carbide is finished, the trolley and calcium carbide pot are pulled to the cooling room by the tractor. Calcium carbide is cooled for about 5 to 6 hours, and is lifted with a crane. After being broken, it is put into an iron cylinder and stored.
Each discharge of calcium carbide furnace sample analysis once, each sample analysis is required to provide the results of the furnace length and in front of the furnace within 1 hour.
Smelting and pouring are three shifts, and the annual operation days are 330 days.
The flue gas produced by the electric furnace smelting enters the dust removal flue through the smoke hood and chimney, and the flue gas generated when the calcium carbide is emitted also enters the dust removal flue through the top suction hood. After the two parts of the flue gas are summarized, it enters the positive pressure large cloth bag dust collector, and the dust purification reaches the emission standard stipulated by the State.
The cooling water of the electric furnace is supplied by the water pump station. After cooling the cooling water into the electric furnace, the cooling water is naturally returned to the cooling pool by using the drop. After cooling in the pool, the water is supplied to the furnace by the pump for recycling.
Company profile
Liaoning JinRong Machinery Import and Export Co.,LTD,AnShan Ying Yat Trade Co.,Ltd, located in the northeast region of the largest steel industry city,it has the reputation of "the steel capital of the republic"--Anshan. The specific address is Qianshan West Road, Tiexi District, Anshan City, Liaoning Province. We always adhere to the customer first, with sincere service to impress customers, to "honest and trustworthy, customer first" as the principle, and in terms of products and to "quality-oriented, keep improving" as their own practice standards, and strive to provide customers with a full range of quality services at the same time, but also make the enterprise get long-term development. Machinery equipment production and processing machinery industry quality enterprises. The company mainly metallurgical equipment, with research and development, design, production, installation, commissioning, trial production, one-stop services. We mainly produce rolling equipment, continuous casting equipment and auxiliary equipment for steel mills.Wire, bar, strip, section steel and other long steel rolling production line equipment manufacturing and engineering contracting services. Full experience of steel production line general contracting service. Various mature steel rolling production lines can be customized according to user requirements, such as high-speed bar, high-speed wire, sectional material, H steel, strip steel, ordinary bar, ordinary wire, etc. It can provide process design, equipment manufacturing, equipment installation, equipment debugging, etc. of all equipment in the production line, shortening the production time for customers, improving market competitiveness faster, and creating economic benefits faster.
According to the actual needs of users, the annual output of our production line can range from tens of thousands of tons to more than one million tons; the rolling speed can range from 5m / S (or even lower) to 105m / S; the operation control ability of the equipment can range from manual auxiliary operation to fully automatic operation; the total investment of the project can range from millions of yuan to more than 100 million yuan, fully meeting the needs of users. Industrial automation equipment. In metallurgical industry, factory power distribution, electrical automation control design, metallurgical electrical equipment including high-speed wire, bar, strip and other DC speed control equipment, continuous casting automatic control system, blast furnace and converter automatic control system, etc. The company has established many steel production lines, continuous casting and rolling high-speed bar production lines for many countries, and has rich experience in general contracting of steel production lines. Excellent after-sales service, products have been highly praised by users. The company produces and processes 2-high temper mill, 4-high reversing cold mill, 6-high reversing cold mill, 12 high mill, 3-continuous mill, 4-continuous mill, 5-continuous mill, hot rolling mill, finishing mill, straightener, pickling line, etc. Focus on the production of heavy-duty cold and hot rolling mills, hot rolling mills, wire rod mills, rebar mills, section steel mills, strip mills, H-beam mills, continuous casters, slab continuous casters, and billet continuous casters , Rectangular billet continuous casting machine, special-shaped continuous casting machine, ingot casting machine, various large riveting and welding parts, and various machining parts, various large castings, and various mechanical accessories, as well as making various furnaces for smelting. Blast furnace, converter, refining furnace, intermediate frequency furnace, electric arc furnace, submerged arc furnace, heating furnace, our equipment from smelting to continuous casting to steel rolling, continuous casting and rolling, equipped with dozens of large CNC milling and boring machines, 5m*16m, 3.2m *16m CNC gantry milling machine, four-axis vertical machining center, 6.3m vertical lathe, 3.2m gear hobbing machine and more than 250 various metal cutting machine tools, with 200t, 100t, 75t, 50t, 32t and other bridge cranes. Riveting Welding and machining have become one of the machining bases with strong comprehensive processing capabilities. The company's mechanical equipment and leading turnkey projects are more favored and praised by customers all over the world.
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