Industrial by-product gypsum calcining equipment

An industrial by-product gypsum and calcination technology, applied in calcium/strontium/barium compounds, inorganic chemistry, chemical instruments and methods, etc., can solve problems such as failure to achieve calcination effects, burnout of drying and calcination machines, and low temperature distribution. To achieve the effect of saving raw materials and energy, reducing output, and commissioning output
CN106927704AActive Publication Date: 2017-07-07ZHENGZHOU SUNDY BUILDING TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHENGZHOU SUNDY BUILDING TECH
Publication Date
2017-07-07

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Abstract

The invention relates to industrial by-product gypsum calcining equipment, which comprises a sting-out furnace, a kiln head, a roller, a feed hopper, an anhydrous gypsum discharge hole, a semi-hydrated gypsum discharge hole, a power transmission unit and a waste elevator. According to the invention, a temperature sensor is arranged at the discharge hole of a roller of an existing gypsum drying calcinator, and the discharge hole is also provided with a reversing valve and a discharge pipe. The temperature sensor detects the temperature of a material discharged out of the discharge hole of the roller. When the temperature in the roller is lower than the temperature of qualified gypsum, the temperature sensor controls the reversing valve for reversing, and unqualified gypsum products are conveyed into a waste gypsum storage tank. The waste elevator lifts and conveys unqualified gypsum into the feed hopper of the gypsum drying calcinatory, and then the unqualified gypsum is once again calcined and dried. Therefore, output of unqualified gypsum is reduced, output of qualified gypsum is raised, and raw materials and energy are saved.
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Description

technical field

[0001] The invention relates to the technical field of industrial by-product gypsum production equipment, in particular to a calcining equipment for industrial by-product gypsum, especially phosphogypsum. Background technique

[0002] Gypsum is a chemical composition of calcium sulfate containing crystal water. In daily life, gypsum is divided into natural gypsum and chemical gypsum. Natural gypsum is a mineral containing two crystal water. Chemical gypsum is used when producing fertilizers and other chemical raw materials. The waste produced, with the improvement of the emission requirements of coal-fired boilers, the by-product of the desulfurization process is called desulfurization gypsum; the waste gypsum produced by the production of fertilizers and other phosphides is called phosphogypsum because it contains phosphorus oxide. The application of building materials is mostly to calcinate raw gypsum containing two crystal waters into gypsum containing hal...

Claims

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