Development Of Sillimanite Standard Substance

Standard for evaluation and calibration of measuring instruments, measuringmethods, determining the characteristics of material and product value, plays a veryimportant role in industry measurement, product quality control and scientificresearch. Topic on sillimanite standard substance introduces the basic properties ofstandard substance, its function and development process. According to this standardmaterial properties and applications, select two suitable mining areas as samplecollection point. According to the “standard”(JJG1006-1994) program developedby, homogeneity and stability testing in the Ministry of land and resources of Harbinmineral resources supervision and inspection center. Sample F test to test thehomogeneity of the sample. Standard requirements for substances in the uniformityand stability of qualified inspection met National Metrology authentication, and ithas a rich experience of analysis and tests at laboratories, all this combined value ofsetting of sillimanite standard substance. To participate in the fixed value to providelaboratory data, technical decision according to the method of error, laboratory dataunqualified rejection detection, the technique to determine the qualified laboratorydata using Grubbs test, to determine whether there is a large systematic errordetection data provided by laboratory by standard deviation or average deviationdifference detection data. Between the inspection data using Cochran test forvariance test laboratory is accuracy. Confirm inspection through the above in settinglaboratory no abnormal data and abnormal laboratory; calculate the average valueand standard deviation.As the average expanded uncertainty representation sillimanite standardsubstance value elements. In the development process of sillimanite medium siliconaluminium analysis experiments were carried out to determine the analysis method, anumber of fixed values used in units, with satisfactory results. After9jointlaboratory setting and calculation the research results of the sillimanite standard materials showed that homogeneity, stability of two mining area of sample selectionare good. Affirming the value of38elements, the standard substance and material ofsimilar foreign standards, has more value elements, contents widely main technicalcharacteristics, such as value method (using advanced instruments), setting accuracy,stability, even more than similar foreign standard level.