Trihydrate alumina gas phase fluidization calcining furnace lining
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A fluidized roasting, aluminum hydroxide technology, applied in fluidized bed furnaces, furnaces, integral linings, etc., can solve the problems of material falling off at expansion, unreasonable structure, cracks, etc., to enhance impact resistance and improve use. effect of life
Active Publication Date: 2008-09-10
李朝侠
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[0004] The purpose of the present invention is to solve the above-mentioned problems and deficiencies, and discloses a kind of aluminum hydroxide dilute-phase fluidized roasting furnace lining. In addition to implementing material optimization and replacing imports, it can solve the common system problems caused by high temperature in furnace linings. Loss and common problems of cracks, material loss at expansion, unreasonable structure
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Embodiment 1
[0037] Adopt Danish Smith 1400T / D AL(OH) 3 Dilute phase fluidized roaster.
[0038] Its newly-built furnace lining structure is designed as: cyclone cooler CO1, CO2, CO3, main roaster PO4, hot air separation cyclone PO3, cyclone preheater PO2, riser pipe inclined roof and furnace body roof are designed as flexible hanging 1 plus refractory casting materials to keep the furnace top stable, and the flue part of the PO3 top is reinforced with a high-temperature skeleton;
[0039] Change the rigid thrust anchoring brick on the side wall of the furnace body into a point-shaped heat-resistant metal anchor piece 5, and change the fixed anchoring force on the side wall into a pulling force to adapt to the direction of expansion of the furnace wall;
[0040] Reinforce the furnace lining with heat-resistant alloy anchors at the slack parts and critical and turning parts of all structural layers of the GSC furnace;
[0041] The feeding pipes and anchors of all wear-resistant linings of...
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Abstract
The invention provides a hydrafil dilute phase fluidizaton roasting furnace brick lining, comprising a furnace body top, an ascending tube wagon top, a furnace body side wall, a conic cylinder, a separator, a gas duct, a central cylinder and a furnace brick lining on a steering cylinder body, wherein, the furnace brick lining mainly consists of a fiber mat layer, a light castable refractory layer and a heavy castable refractory layer, the inside of the furnace brick lining is provided with at least one flexible suspension or points-shaped heat resisting metal clip respectively connecting the furnace body top, the ascending tube wagon top, the furnace body side wall, the conic cylinder, the separator, the gas duct, the central cylinder, the fiber mat layer on the steering cylinder body, the light castable refractory layer, the heavy castable refractory layer and the outside wall into a whole. The hydrafil dilute phase fluidizaton roasting furnace brick lining is provided with various refractory materials comprehensively, solves the problems of the system loss, the common crackle, the shedding of the material at the expanding position and the unreasonable structure caused by the high temperature of the furnace brick lining and realizes the obvious economic benefits of reaching production targets, exceeding the production goal, saving energy, decreasing the energy consumption and prolonging the service life.
Description
technical field [0001] The invention relates to a roasting furnace in nonferrous metallurgy, in particular to a furnace lining for a large aluminum hydroxide dilute-phase fluidized roasting furnace. Background technique [0002] At present, the large aluminum hydroxide dilute-phase fluidized roasting furnaces used in our country mainly come from abroad, and the main equipments include the fluidized flash roasting furnace (FFC) of Alcoa in the United States and the circulating fluidized bed roasting furnace of Lurgi Company in Germany. Furnace (CFBC), gaseous suspension roasting furnace (GSC) of Danish Smith Company (hereinafter referred to as GSC furnace). In recent years, most of the equipment used in my country is gaseous suspension roaster (GSC) produced by Danish Smith Company. The introduction of large aluminum hydroxide dilute phase fluidized roaster is AI 2 o 3 The last key process of production, the all-round factors of furnace lining refractory structure design, ma...
Claims
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Application Information
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