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A cement combined semi-finish grinding optimization control system and method

An optimized control, cement technology, applied in the direction of comprehensive factory control, electrical program control, comprehensive factory control, etc., can solve problems such as gaps, and achieve the effects of large mill current, stable quality, and reasonable cement particle size distribution

Active Publication Date: 2019-01-04
UNIV OF JINAN +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Online real-time particle size detection technology has been widely used in foreign countries, but most domestic cement manufacturers are still using manual offline detection methods, which makes my country's cement industry still have a considerable gap with foreign advanced cement enterprises in the control of cement particle size quality

Method used

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  • A cement combined semi-finish grinding optimization control system and method
  • A cement combined semi-finish grinding optimization control system and method
  • A cement combined semi-finish grinding optimization control system and method

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Embodiment Construction

[0119] Such as figure 1 As shown, clinker, slag, fly ash and other materials are mixed in a certain proportion, and then slowly enter the roller press through the steady flow of the steady flow bin. The roller press squeezes the material. After being extruded by the roller press, the fine particles in the material are selected by the powder separator, and then are drawn into the bag filter 1 by the main exhaust fan, and then directly enter the cement silo. The coarser materials selected by the classifier enter the ball mill for grinding, and the qualified cement after grinding is sucked into the bag filter 2 by the tail fan, and then enters the cement storage. The metering scale under the powder classifier weighs and measures the materials entering the ball mill. The opening of the cold air valve can adjust the negative pressure in the powder separator. When the opening of the cold air valve becomes larger, the negative pressure in the powder separator becomes smaller, and t...

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Abstract

The invention discloses a cement combination semi-finishing grinding optimization control system. The cement combination semi-finishing grinding optimization control system comprises a data acquisition subsystem, a data analyzing subsystem, a DCS control subsystem, and a centralized control subsystem. The data acquisition subsystem is used to acquire parameters of cement production key equipment in DCS and particle size parameters analyzed and processed by a particle size analyzer. The data analyzing subsystem is used to determine whether cement particle size distribution is reasonable according to data acquired by the data acquisition subsystem, and according to the cement particle size distribution condition, the cement production key equipment is selected to be adjusted, so that the cement particle size tends to be normal, and by using the data analyzing subsystem, the adjusting amplitude of the cement production key equipment is provided. The cement key equipment is adjusted by the DCS control subsystem according to a result acquired by the data analyzing subsystem, and therefore objects of reasonable cement particle size distribution and stable quality are achieved. The invention also provides a cement combination semi-finishing grinding optimization control method.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to an optimization control system and method for cement combined semi-finish grinding. Background technique [0002] Combined semi-final grinding of cement is a core part of cement production. Its essence is to select most of the fine powder (below 30um, mainly below 20um) produced by the high-efficiency pre-grinding system and directly enter the finished product. The cement particle size is a key characterizing parameter in cement grinding. In practice, cement particle size can affect the quality and performance of cement, which directly affects the fluidity, strength and a series of physical properties of cement. The key equipment that affects the cement particle size in the combined semi-final grinding of cement includes the classifier, the main exhaust fan and the tail fan. The early hydration rate of cement is too fast and the crack resistance becomes poor; on the o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 张强袁铸钢刘恒涛王孝红于宏亮崔行良王云
Owner UNIV OF JINAN
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