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Raw material ratio automatic control method of cement raw material batching system

A technology of cement raw meal and batching system, which is applied in the direction of various fluid ratio control, etc. It can solve the problems of long time lag, large fluctuations in the content of cement raw meal components, and the adjustment of cement raw material ratio is greatly affected by human subjective factors. To achieve the effect of quality assurance

Inactive Publication Date: 2017-09-15
YANSHAN UNIV
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Problems solved by technology

Moreover, in the cement production process, there are still some shortcomings such as large fluctuations in the content of cement raw materials, the adjustment of cement raw material ratio is greatly affected by human subjective factors, and the time lag is long.

Method used

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  • Raw material ratio automatic control method of cement raw material batching system
  • Raw material ratio automatic control method of cement raw material batching system
  • Raw material ratio automatic control method of cement raw material batching system

Examples

Experimental program
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Embodiment 1

[0027] Embodiment 1: Take five kinds of cement raw materials as example.

[0028] This method can automatically control the ratio of each raw material of cement in the actual production of a certain cement factory, figure 1 It is the control schematic diagram of this method, and the specific implementation scheme process is as follows figure 2 shown.

[0029] Step 1, first input the initial parameters of the system, which are provided by the laboratory of the cement factory. The initial parameters include the oxide components of the raw materials of the sample cement, and the target setting values ​​of the cement raw material ratio (saturation ratio KH, silicon ratio SM, aluminum ratio IM) , the upper limit and lower limit of the ratio adjustment of each raw material of cement, the historical ratio data of each raw material of cement for 30 times (m=30), the target values ​​of cement raw material ratio (KH, SM, IM) are 1.00, 2.55, 1.55 respectively, and the sample cement Th...

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Abstract

The invention discloses a raw material ratio automatic control method of a cement raw material batching system. A system initial parameter is inputted; the optimal solution is solved by the system according to the initial parameter based on nonlinear programming to calculate the current optimal matching proportion of each raw material, and the obtained latest matching proportion is inputted to a DCS material feeding system again; and when the next period is started, an element online analyzer automatically detects the content of each oxide of the cement raw material mixture, the oxide component of each raw material of the cement is calculated through the least square method, the system automatically updates the exiting oxide component of each raw material of the cement, the optimal solution is solved by using nonlinear programming again to calculate the latest matching proportion and the matching proportion is set in the DCS distributed control system to control a PLC lower computer to feed the material in a periodic cycling way. According to the method, the conventional disadvantages of large data fluctuation and large error caused by manually adjusting the raw material matching proportion of operation personnel by depending on the experience can be avoided so that the stability of the cement raw material components can be effectively guaranteed in real time and the quality of the cement raw material feeding to the kiln can be guaranteed.

Description

technical field [0001] The invention relates to the field of cement production, in particular to a method for real-time controlling the proportioning of various cement raw materials based on an online element analyzer. Background technique [0002] The main process of cement production process The production process can usually be divided into four steps: raw material preparation, coal powder preparation, clinker calcination, cement grinding and delivery. Among them, the quality of cement raw meal before calcining in kiln is very important. In cement raw meal, Ca, Si, Fe, Al, the proportion of the four elements in clinker has a great influence on the quality of cement. Adjusting the proportion of cement raw materials determines the content of each oxide in raw meal, and raw meal It is the basis of the entire cement production. How to accurately adjust the proportion of cement raw materials to make the raw materials entering the kiln stable and of the best quality has become...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D11/13
Inventor 郝晓辰靳世广赵彦涛
Owner YANSHAN UNIV
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