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Zinc metallurgy ore smelting electric arc furnace spherical top integral pouring and maintenance method

A submerged electric furnace and integral pouring technology, which is applied in furnace crown/roof, building material processing, ceramic molding machine, etc., can solve the problems of furnace gas rushing slope and other problems, and achieve the effect of low power consumption, short construction period and low cost

Active Publication Date: 2008-09-10
李朝侠
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AI Technical Summary

Problems solved by technology

There are many holes in the vault, and the furnace is required to be sealed. When there is a problem in the process operation, the change of the reaction atmosphere, the positive pressure of the furnace, and the slope of the furnace gas have caused extremely harsh working conditions for the furnace roof of the submerged heat electric furnace for zinc smelting.

Method used

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  • Zinc metallurgy ore smelting electric arc furnace spherical top integral pouring and maintenance method
  • Zinc metallurgy ore smelting electric arc furnace spherical top integral pouring and maintenance method
  • Zinc metallurgy ore smelting electric arc furnace spherical top integral pouring and maintenance method

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Embodiment Construction

[0033] like figure 1 , figure 2 As shown, select a reasonable central angle 2 and locate the electrode hole 3 and the feeding hole 4 according to the type and power of the electric furnace.

[0034] like image 3 , Figure 4 As shown, the vault is poured in separate rings and blocks, with a thickness of 350 mm and a thickness of 450 mm in the center of the electrode circle. The blocks are connected as a whole with anchors 9 .

[0035] The dome of the 3000KVA electric furnace is divided into 3 rings and 21 blocks for pouring, and the angle of the center of the circle must be accurately controlled.

[0036] The outer surface of the inner mold of the vault is required to be smooth and flat, and the line is drawn in advance according to the pouring block and the cut surface is vertical.

[0037] Heat loss semi-expansion joints are arranged longitudinally intermittently in the middle of each formwork. The material is plywood ≤ 3mm, and 3 pieces of 80×300mm are reserved for eac...

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Abstract

The invention provides a method for integral casting and maintaining a zinc ore metallurgy thermal-electric furnace globe-roof. A reasonable central angle is selected according to the electric furnace type and the power and an electrode hole and a feeding hole are positioned. The vault is cast in a way of rings and blocks, the thickness is 350 millimeters; the center thickness of the electrode hole is 450 millimeters. A clip is used for connecting blocks into a whole. The middle of each template is provided with thermolability expansion gap vertically and discontinuously. The material adopts a veneer board more than or equal to 3 millimeters. Each template reserves three veneer boards with areas of 80 multiplied by 300 millimeters and is fixed on the upper part of the inner mould vertically. After casting, the demoulding is performed and furnace is dried. The method has the advantages of simple construction technology, short time limit for a project, high construction quality and security, environment protection, good leak tightness of the furnace, low electric energy consumption, long service life and low cost.

Description

technical field [0001] The invention belongs to the metallurgical monolithic refractory application technology of submerged heat electric furnace, and mainly proposes a novel, environment-friendly integral casting technology of a spherical roof. Background technique [0002] my country is the world's largest producer of zinc, but the per capita consumption of zinc is only 0.8kg / a, the average per capita in the world is 1.2kg / a, and the average per capita in the United States is 5.6kg / year, which is lower than the world's average level. The productivity is about 1 / 10 of that of industrialized countries, and in key processes such as zinc ore direct pressurized acid leaching wet zinc smelting, electric furnace industrial zinc smelting, which have obvious advantages, the process cycle is short, the direct rate is high, and the environmental protection standard is met. Metallurgy varies widely. [0003] Submerged thermal electric furnace zinc smelting is still a new thing in our c...

Claims

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Application Information

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IPC IPC(8): F27D1/02E04G21/00B28B11/00C04B35/622
Inventor 李朝侠黄河黄兴远
Owner 李朝侠
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