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Cast copper water jacket embedded with double-layer pure copper pipes and manufacturing method thereof

A manufacturing method and technology for copper pipes are applied in the field of buried double-layer pure copper pipes and cast copper water jackets, which can solve problems such as large influence on production and operation, and achieve the effects of eliminating hidden dangers in use, reducing water flow, and high leak-proof performance.

Active Publication Date: 2012-03-28
江西余越科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The overhaul of a large-scale nickel-iron electric furnace costs tens of millions, consumes 1,000 tons of refractory materials, and takes 1-2 months to stop production. Frequent overhauls and overhauls have a great impact on the production and operation of the enterprise, so the extension of large-scale nickel-iron electric furnace Body life technology has become an urgent issue for ferronickel smelting enterprises

Method used

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  • Cast copper water jacket embedded with double-layer pure copper pipes and manufacturing method thereof
  • Cast copper water jacket embedded with double-layer pure copper pipes and manufacturing method thereof
  • Cast copper water jacket embedded with double-layer pure copper pipes and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] First, four cooling pipes 6, 7, 8, and 9?49×6 whole hot-extruded pure copper pipes are bent into shape. The bent copper tube is pickled to remove rust and polished, and then the inner cavity of the copper tube is filled with resin sand and a certain proportion of phenolic resin. The weight ratio between resin sand and phenolic resin is 100:0.6. The pretreated copper pipe is installed with a pipe clamp positioning device and pre-embedded in the graphite mold, and a feeding channel and a stepped pouring system are set in the mold. Then push the molded box into the drying room and quickly raise the temperature to 540°C for 4 hours, then leave the drying room and lower the temperature to 100°C, and pour the smelted copper water containing Cu≥99.95% into the mold box through the pouring system, and the copper water The furnace temperature is controlled at 1228°C, and the pouring temperature is controlled at 1130°C; when the temperature drops to 700°C, the casting is opened a...

Embodiment 2

[0032]First, four cooling pipes 6, 7, 8, and 9?49×6 whole hot-extruded pure copper pipes are bent into shape. The bent copper tube is pickled to remove rust and polished, and then the inner cavity of the copper tube is filled with resin sand and a certain proportion of phenolic resin. The weight ratio between resin sand and phenolic resin is 100:0.8. The pretreated copper pipe is installed with a pipe clamp positioning device and pre-embedded in the graphite mold, and a feeding channel and a stepped pouring system are set in the mold. Then push the molded box into the drying room and quickly raise the temperature to 550°C for 4 hours, then leave the drying room and lower the temperature to 110°C, and pour the smelted copper water containing Cu≥99.95% into the mold box through the pouring system, and the copper water The furnace temperature is controlled at 1242°C, and the pouring temperature is controlled at 1148°C; when the temperature drops to 750°C, the casting is opened an...

Embodiment 3

[0034] First, four cooling pipes 6, 7, 8, and 9?49×6 whole hot-extruded pure copper pipes are bent into shape. The bent copper tube is pickled to remove rust and polished, and then the inner cavity of the copper tube is filled with resin sand and a certain proportion of phenolic resin. The weight ratio between resin sand and phenolic resin is 100:0.7. The pretreated copper pipe is installed with a pipe clamp positioning device and pre-embedded in the graphite mold, and a feeding channel and a stepped pouring system are set in the mold. Then push the molded box into the drying room and quickly raise the temperature to 530°C for 4 hours, then leave the drying room and lower the temperature to 90°C, and pour the smelted copper water containing Cu≥99.95% into the mold box through the pouring system, and the copper water The furnace temperature is controlled at 1225°C, and the pouring temperature is controlled at 1125°C; when the temperature drops to 700°C, the casting is opened an...

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Abstract

The invention relates to a cast copper water jacket embedded with double-layer pure copper pipes for cooling large nickel-iron electric furnace bodies, and a manufacturing method thereof. The water jacket comprises four double-layer misplaced cooling pipelines which are installed in an arc wall body, wherein the water inlet duct and water outlet duct of each cooling pipeline are positioned on theouter arc surface of the arc wall body; the outlet heads of each water inlet duct and each water outlet duct are provided with duct protecting bosses capable of preventing the root of each duct from being cut by a furnace shell because of expansion caused by heat and contraction caused by cold; and an installation hole is formed on the upper end surface of the arc wall body. In the invention, by adopting the technical scheme, the manufactured cast copper water jacket embedded with double-layer pure copper pipes has the advantages of good cooling performance, good thermal shock resistance, good leak resistance, high utilization rate of effective working volume of equipment, low manufacturing cost and long service life, thereby laying a foundation for a process of producing nickel iron by directly smelting laterite in a nickel-iron electric furnace.

Description

technical field [0001] The invention relates to a buried double-layer pure copper tube cast copper water jacket for cooling a large-scale nickel-iron electric furnace body and a manufacturing method thereof. Background technique [0002] With the rapid development of my country's economy and the continuous improvement of people's living standards, and people's gradual understanding of the excellent characteristics of stainless steel such as corrosion resistance, high temperature resistance, high strength, and exquisite surface, the consumption of stainless steel in China has grown rapidly. At present, my country has developed Become the world's largest producer and consumer of stainless steel. The increase in stainless steel production has brought about the shortage of raw materials (mainly nickel and chromium resources). Since my country is a country short of nickel and chromium resources, the great development of stainless steel production capacity will inevitably lead to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D9/00B23P15/00B22D19/16C22B9/05
Inventor 阮新伟
Owner 江西余越科技有限公司
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