Energy-saving gypsum calcination system and process

An energy-saving, gypsum technology, applied in the field of gypsum calcination system, can solve problems such as unstable product quality, waste of land resources and environment, and unsound supporting facilities, and achieve high energy utilization rate, wide application, and stable operation.

Active Publication Date: 2010-09-15
SHANDONG TIANLI DRYING TECH & EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If these industrial by-products of gypsum are not treated, it will not only waste land resources but also cause environmental pollution
[0005] At present, most of the existing large-scale gypsum products enterprises in Chin

Method used

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  • Energy-saving gypsum calcination system and process
  • Energy-saving gypsum calcination system and process

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Embodiment Construction

[0044] The present invention will be further described below in conjunction with figures and specific embodiments.

[0045] as attached figure 1As shown, the gypsum wet material enters the paddle dryer 2 after passing through the metering belt 1, and in the paddle dryer 2, it exchanges heat indirectly with the steam in the jacket of the cylinder wall and the hollow blade, continuously dehydrates, and quickly achieves the drying effect. The gypsum material that has achieved the drying effect is discharged from the discharge port of the paddle dryer 2, passes through the screw conveyor I7 and the bucket elevator I8, and then enters the silo 9 for storage. The gypsum material coming out of the silo 9 enters the vibrating sieve I10 for screening, and the coarse gypsum material on the vibrating sieve I10 enters the intermediate silo 11 for storage. Part of the gypsum material in the intermediate silo 11 is transported to the cement bulk truck 12, and the other part first enters th...

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Abstract

The invention discloses an energy-saving gypsum calcination system and an energy-saving gypsum calcination process. The energy-saving gypsum calcinations system comprises a paddle dryer, a vibrating screen, a cement bulk truck, a pelletizer and a cement delayed coagulation device, a fluidized bed calcinator, a building gypsum processing device, and an oscillation flow heat pipe. The paddle dryer is used for drying wet gypsum materials; the vibrating screen is used for screening the dried gypsum; the cement bulk truck is used for manufacturing cement; the pelletizer and the cement delayed coagulation device are used for palletizing the dried gypsum which is used as a cement retarder; the fluidized bed calcinatory with a bag-type dust collector is used for calcining the gypsum; the building gypsum processing device is used for processing the calcined gypsum into building gypsum powder; and the oscillation flow heat pipe is used for utilizing residual heat of the moisture-carrying gas and fluidized gas. Due to the adoption of a device for drying and calcining successively, the calcining efficiency and product quality are improved; and the residual heat is fully utilized, so the energy utilization rate of the system is improved. The process system has the advantages of continuous operation, high heat efficiency, low energy consumption, high yield, stable operation, convenient operation, and automatic control.

Description

[0001] technical field [0002] The invention relates to a gypsum calcining system, in particular to an energy-saving gypsum calcining system with primary paddle drying and secondary fluidized bed calcining and its process. [0003] Background technique [0004] Gypsum stone or industrial by-product gypsum exists in the form of calcium sulfate dihydrate. When dihydrate gypsum is heated to a certain temperature, it will easily lose part of its crystal water and become hemihydrate gypsum. This process is called calcination of gypsum. With the rapid development of my country's industry, the output of desulfurization gypsum, phosphogypsum and other industrial by-products of gypsum has also increased rapidly. If these industrial by-products of gypsum are not processed, it will not only waste land resources but also cause environmental pollution. [0005] At present, most of the existing large-scale gypsum products enterprises in China use internal and external fired rotar...

Claims

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Application Information

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IPC IPC(8): C04B11/028
Inventor 邢召良刘峰陈洪军倪春林刘明李捷
Owner SHANDONG TIANLI DRYING TECH & EQUIP
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