RKEF Fire Method producing Nickel Introduction
author: Glimpse
2022-12-01
RKEF Fire Method producing Nickel Introduction
Abstract: The treatment method of red earth nickel ore has fire method smelting and wet smelting. The fire method mainly processes the silicone -nickel -type red earth ore with high nickel -containing magnesium -containing magnesium. The smelting process mainly includes the drying kiln drying -electric furnace melting method, vulcanizing furnace sulfur melting method, and blast furnace reduction melting method. The products are mainly nickel -iron alloys and nickel -murmur products. Nickel -iron alloy is mainly for production of stainless steel. Nickels are used as raw materials for further smelting of nickel.
The treatment method of red earth nickel ore has fire smelting and wet smelting. The fire method mainly treats the silicone -type red earth ore with high nickel -containing magnesium -containing magnesium -containing magnesium. The smelting process mainly includes the drying kiln drying -electric furnace melting method, vulcanizing furnace sulfur melting method, and blast furnace reduction melting method. The products are mainly nickel -iron alloys and nickel -murmur products. Nickel -iron alloy is mainly for production of stainless steel. Nickels are used as raw materials for further smelting of nickel.
The use of red earth nickel ore refining refined nickel iron -ironing kiln -ore heat furnace (RKEF) process technology is the emerging nickel iron smelting technology in recent years. In 2004, Ukong Popus Niche Iron Factory improved the revolving kiln dry -electric furnace melting method (RKEF) The production of nickel iron with red earth nickel has achieved eye -catching economic benefits. The RKEF process is famous for its fame, which is suitable for building nickel iron production plants in areas with good transportation conditions. In recent years, China has vigorously introduced this technology, and a number of modern nickel -gold enterprises have been built in coastal areas, such as Guangqing Metal Technology.
Process introduction
After the ore, limestone, and reducing agent are screened between the raw materials and preparations, the mixed ingredients are mixed and the ingredients are delivered to the rotary kiln. In the rotary kiln, the raw materials are made of nickel residue of about 1000 ° C through dryness, baking, and reducing them. The rotating kiln flue gas is discharged after the waste heat boiler, dust removal, and desulflation.
(1) Production process
The raw material field → sieve, crushing and mixed ingredients → turning kiln → ore heat furnace → iron bag desulfurization → refined turntable → casting. On this basis, the pre -drying, raw material ball making, reckless kiln, energy -saving and residual heat power generation, high -efficiency smelting and low -melting point slag system ingredients are developed, and the use of bottom blowing or side blow refinement furnace instead of top blowing furnace, nickel iron particles, nickel iron particles Technology and other technologies are suitable for factories with different conditions.
(2) Typical process equipment composition
Two 5.0 × 100M rotary kiln, 2 63MVA closed -ore hot furnaces, 40T bottom blowing refinement furnace, granules and block equipment. Nickel iron is 10.12 million T (2 to 22,000 T). In view of the maturity and transportation conditions of domestic equipment, in order to reduce investment, domestic factories under construction adopt 4 rotary kiln and 2 48MVA hot furnaces will shorten the construction cycle and receive good economic benefits.
Keywords：RKEF process, nickel alloy
Abstract: The treatment method of red earth nickel ore has fire method smelting and wet smelting. The fire method mainly processes the silicone -nickel -type red earth ore with high nickel -containing magnesium -containing magnesium. The smelting process mainly includes the drying kiln drying -electric furnace melting method, vulcanizing furnace sulfur melting method, and blast furnace reduction melting method. The products are mainly nickel -iron alloys and nickel -murmur products. Nickel -iron alloy is mainly for production of stainless steel. Nickels are used as raw materials for further smelting of nickel.
The treatment method of red earth nickel ore has fire smelting and wet smelting. The fire method mainly treats the silicone -type red earth ore with high nickel -containing magnesium -containing magnesium -containing magnesium. The smelting process mainly includes the drying kiln drying -electric furnace melting method, vulcanizing furnace sulfur melting method, and blast furnace reduction melting method. The products are mainly nickel -iron alloys and nickel -murmur products. Nickel -iron alloy is mainly for production of stainless steel. Nickels are used as raw materials for further smelting of nickel.
The use of red earth nickel ore refining refined nickel iron -ironing kiln -ore heat furnace (RKEF) process technology is the emerging nickel iron smelting technology in recent years. In 2004, Ukong Popus Niche Iron Factory improved the revolving kiln dry -electric furnace melting method (RKEF) The production of nickel iron with red earth nickel has achieved eye -catching economic benefits. The RKEF process is famous for its fame, which is suitable for building nickel iron production plants in areas with good transportation conditions. In recent years, China has vigorously introduced this technology, and a number of modern nickel -gold enterprises have been built in coastal areas, such as Guangqing Metal Technology.
Process introduction
After the ore, limestone, and reducing agent are screened between the raw materials and preparations, the mixed ingredients are mixed and the ingredients are delivered to the rotary kiln. In the rotary kiln, the raw materials are made of nickel residue of about 1000 ° C through dryness, baking, and reducing them. The rotating kiln flue gas is discharged after the waste heat boiler, dust removal, and desulflation.
(1) Production process
The raw material field → sieve, crushing and mixed ingredients → turning kiln → ore heat furnace → iron bag desulfurization → refined turntable → casting. On this basis, the pre -drying, raw material ball making, reckless kiln, energy -saving and residual heat power generation, high -efficiency smelting and low -melting point slag system ingredients are developed, and the use of bottom blowing or side blow refinement furnace instead of top blowing furnace, nickel iron particles, nickel iron particles Technology and other technologies are suitable for factories with different conditions.
(2) Typical process equipment composition
Two 5.0 × 100M rotary kiln, 2 63MVA closed -ore hot furnaces, 40T bottom blowing refinement furnace, granules and block equipment. Nickel iron is 10.12 million T (2 to 22,000 T). In view of the maturity and transportation conditions of domestic equipment, in order to reduce investment, domestic factories under construction adopt 4 rotary kiln and 2 48MVA hot furnaces will shorten the construction cycle and receive good economic benefits.
Keywords：RKEF process, nickel alloy
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