This document specifies the classification and marking, technical requirements, test methods, inspection rules, marking, Encasement, transportation and storage of microcrystalline stone ink. Applicable to natural microcrystalline stone ink raw ore and microcrystalline stone ink products. Normative reference documents include graphite fineness test methods, graphite chemical analysis methods, general rules for sampling solid chemical products, specifications and test methods for analytical laboratory water, representation and determination of numerical revision rules and limit values, particle size analysis Chengguang diffraction method, determination method of trace elements in high-purity graphite, etc. The terms and definitions define microcrystalline stone ink as an aggregate composed of natural graphite crystals with a particle size of less than 1 μm, and its graphitization degree is greater than 55.0%. Microcrystalline stone ink is divided into microcrystalline stone ink mineral products and microcrystalline graphite products according to the processing process. Microcrystalline stone ink products are divided into commercial pure microcrystalline stone ink, high-carbon microcrystalline stone ink, medium-carbon microcrystalline stone ink, and low-carbon microcrystalline stone ink according to the fixed carbon content. See Table 1 for classification codes.
| Status | Active |
|---|---|
| CCS | Q51 | ICS | 73.080 |
| Release Date | 2023-11-27 00:00:00 | Implementation Date | 2024-06-01 00:00:00 |