Analysis of the advantages and disadvantages of purchasing coal rock equipment

Digital coal rock analysis At present, many domestic coking and coal washing plants have serious shortages in the coal testing of incoming coal. The main reason is that there is no effective means to analyze whether there is "blending" in the incoming coal, which will affect the stability of subsequent coal blending and coke production, and the cost of coal blending is also high. Compared with the enterprises with corresponding testing equipment, the testing methods of these factories are obviously behind, and the invisible enterprises are losing a lot of benefits every day.

According to the current market situation, the purchase of a set of coal and rock equipment has a one-time investment of several hundred thousand. However, its benefits in the monitoring of the incoming coal and the entire production process far exceed the value of the equipment itself. Especially in the current coke industry's poor efficiency, once the coal and rock equipment is put into use, it will bring huge benefits to the enterprise's compression production cost, which has been tested by domestic large-scale production enterprises. Its main applications in coking production are as follows:

Use coal rock analysis methods to strictly supervise and control raw coal. Recover the losses caused by “doped coal”.

The losses caused by “doped coal” are manifested in two aspects:

First, the coking plant actually bought the low-priced "poor coal" at the high price of "good coal." According to incomplete statistics, this year alone, the number of losses of domestic enterprises is astonishing, ranging from a few million to more than 100 million yuan;

Second, after the “admixed coal” was put into the factory, the typical “good coal” mismatched in the coal blending resulted in large fluctuations in the quality of the coke. The unstable coke quality brought about a large loss in the subsequent sales price; therefore, strict control Raw coal is the key to significantly reducing coke costs.

The specific method is as follows:

Firstly, the rapid coal and rock analysis method is used to accurately identify the degree of coal blending and make a scientific evaluation of coal quality.

In the settlement of coal into the factory, a moderate fine method was adopted for the detected “blended coal” to constrain the coal supplier and recover part of the economic loss. At the same time, for the "quality-poor" coal blending, such as: brown coal, anthracite-mixed, coke-mixed powder, etc., put an end to the factory;

According to the results of coal rock analysis, it is possible to accurately “diagnose” the “combustion type” and “proportion” of the coal into the plant, and make corresponding allocations in the subsequent coal type matching;

Combined analysis of conventional indicators and coal and rock indicators, scientific guidance on coal procurement.

Using the comprehensive analysis method of coal rock index and conventional index, the coal that is really needed is purchased from the actual needs of coal blending. Scientific evaluation of coal quality;

Not blindly "superstition" coal classification, from the coal rock point of view, according to the actual coal blending situation, bold use of some "non-coking coal", significantly reduce coal cost;

Make full use of coal and rock analysis methods, supervise coal in coal, guide coal blending, and stabilize coke quality.

Utilize the coal rock reflectance distribution map to supervise the daily entry of coal, “easy” to find the cause of abnormal fluctuations in production, and effectively stabilize the quality of coke.

The following two aspects can be used to guide the coal type, stabilize and improve the quality of coke.

Pre-simulated synthetic coal blend reflectance distribution map.

Accurately search for “lack” and “multiple” coal types from the measured coal map.

Through the exchanges between many enterprises, it is found that the above economic benefits will be enormous.

According to various sources, it is found that not all brands of coal and rock analysis equipment on the market can satisfy the above applications. Coking production has a large number of coals and a large number. If you want to keep up with production, the purchased coal and rock equipment should have the following four properties:

In addition to the basic manual detection function, it must have an accurate automatic vitrinite group reflectivity detection function;

The equipment must be stable for a long time, and as far as possible, equipment that uses high-voltage photomultiplier tube converters should not be purchased;

The equipment must meet the national standard for the particle size requirements of the samples tested. There are many coal-rock equipments that use non-standard practices such as screening 0.2mm fines, and the measured data is seriously misleading.

The coal and coke microanalysis functions should be comprehensive. Including: coal vitrinite group reflectivity detection, coal micro-component quantitative detection, coke optical tissue detection, block coke porosity automatic detection, etc.; is conducive to comprehensive guidance of production.