UtilizeCoal Petrography AnalysisStrictly supervise and control raw coal by means of coal petrography analysis. Recover the losses caused by "adulterated coal". Coal petrography analysis
The losses caused by "adulterated coal" are manifested in two aspects:
First, coking plants actually buy low-quality "bad coal" at high prices of "good coal". According to incomplete statistics, domestic enterprises suffer staggering losses each year, ranging from millions to hundreds of millions of yuan;
Second, after adulterated coal enters the plant, it is mistakenly used as typical "good coal" in coal blending, causing significant fluctuations in coke quality. Unstable coke quality then leads to substantial losses in subsequent sales prices. Therefore, strictly controlling raw coal is the key to significantly reducing coke costs.
The specific methods are as follows:
First, use rapid coal petrography analysis to accurately identify the degree of coal type "adulteration" and make a scientific evaluation of coal quality.
For settlement of incoming coal, adopt moderate fines for detected "adulterated coal" to discipline coal suppliers and recover part of the economic losses. At the same time, prevent the entry of "extremely poor quality" mixed coal, such as those mixed with lignite, anthracite, coke powder, etc.;
For general incoming mixed coal, based on coal petrography analysis results, accurately "diagnose" the "coal types" and "proportions" of admixtures, and make corresponding reasonable adjustments in subsequent coal blending;
Coal Petrography Analysis SystemPrice
Combine conventional indicators with coal petrography indicators for analysis to scientifically guide coal type procurement.
Adopt the method of comprehensive analysis of coal petrography indicators and conventional indicators, starting from the actual needs of coal blending, to purchase the coal types truly needed. Scientifically evaluate coal quality;
Do not blindly "worship" coal classification. From a coal petrography perspective, according to actual coal blending conditions, boldly use certain "non-coking coals" to significantly reduce coal blending costs;
Make full use of coal petrography analysis to monitor incoming coal, guide coal blending, and steadily improve coke quality.
Use coal petrography reflectance distribution diagrams to monitor daily incoming coal, "easily" find causes of abnormal production fluctuations, and effectively stabilize coke quality.
The following two aspects can be used to guide coal type blending, stabilize and improve coke quality.
Pre-simulate and synthesize a coal blending reflectance distribution diagram.
From the measured incoming coal diagram, accurately identify "missing" and "excessive" coal types.
Through exchanges among multiple enterprises, it has been found that achieving the above points will bring enormous economic benefits.
In addition, through extensive investigation, it has been found that not all brands of coal petrography analysis equipment on the market can meet the above applications. With many batches and large quantities of coal incoming for coking production, to keep up with production, the purchased coal petrography equipment should have the following four performance characteristics:
In addition to basic manual detection functions, it must have accurate fully automatic vitrinite reflectance detection functions;
The equipment must be able to work stably for a long time, and try not to purchase equipment using high-voltage photomultiplier tube type converters;
The equipment's requirements for sample particle size must comply with national standards. Many coal petrography equipment adopt non-standard practices such as sieving out 0.2mm fines, and the measured data seriously mislead production.
The microscopic analysis functions for coal and coke must be comprehensive, including: coal vitrinite reflectance detection, quantitative analysis of coal macerals, coke optical texture detection, automatic detection of lump coke porosity, etc.; beneficial for comprehensive guidance of production.
