Overhaul method for semi-hot state of flash smelting furnace

A flash furnace and furnace body technology, which is applied to furnaces, fluidized bed furnaces, lining repairs, etc., can solve problems affecting production safety, easy damage to triangular areas, and affecting production, so as to shorten maintenance time, avoid costs, Guarantee the effect of production
CN102147192AActive Publication Date: 2011-08-10JINLONG COPPER
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
JINLONG COPPER
Publication Date
2011-08-10
Patent Text Reader

Abstract

The invention discloses an overhaul method for semi-hot state of a flash smelting furnace, which comprises the following steps of: (1) manufacturing a water-cooled baffle; (2) cooling a furnace body and carrying out heat insulation to the furnace body; (3) dividing the flash smelting furnace and isolating by the water-cooled baffle; (4) cooling a cold repair area to room temperature, and cooling a hot-state area to 700 DEG C; (5) overhauling an erosion area in the cold repair area; and (6) sealing the flash smelting furnace after overhauling, naturally warming, lifting the isolating water-cooled baffle for warming, warming the whole furnace body to 800-850 DEG C and keeping constant temperature for 1-2 days after the cold repair area is warmed to 600-700 DEG C, then warming to the feed temperature and finally finishing overhauling. The overhaul method has the advantages that the maintenance cycle is shortened, the maintenance material is saved, the production is ensured, and the economic benefit is improved.
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Description

technical field

[0001] The invention relates to a flash furnace maintenance method in the flash furnace smelting process. Background technique

[0002] The flash furnace smelting process is a smelting process in which the dried concentrate is fully mixed with the process air through the concentrate nozzle and sprayed into the flash furnace, and thermal dissociation and oxidation reactions are carried out in the reaction tower. The obtained matte and slag are separated in a sedimentation tank. Flash furnace is a kind of equipment for high-intensity smelting process. It is composed of reaction tower, sedimentation tank and ascending flue respectively.

[0003] The reaction tower is the main part of the chemical reaction in copper smelting, consisting of the tower top, tower wall and connection. Except for the top of the reaction tower, the body of the tower is surrounded by 20mm thick steel plates to form a shell, and the shell is built with magnesia-chrome refractory brick...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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