石墨分析

今天下午，老师到葫芦岛后电话告知，说鉴于敖包石墨中，石英特征峰与石墨特征峰在2Theta=26.2附近有可能重合峰值，因此，让近期在选矿提纯的同时，将上次焙烧的样品，取适当量用碱融处理，将石英全部转化为硅胶颗粒后，再进行分析测试。这样在XRD特征峰中可以把石英峰值排除，进而完全确认为石墨或隐晶质石墨。用碱融法浸出需要查阅有关工艺条件，待工艺条件确定后，由协同你进行一下试验！

试验条件具备后，可立刻进行试验！

这是分析的XRD图，你参考一下！

Name and formula

Reference code: 01-075-1621

Mineral name: Graphite 2H

ICSD name: Carbon

Crystallographic parameters

Crystal system: Hexagonal

Space group: P63mc

Space group number: 186

a (?): 2.4700

b (?): 2.4700

c (?): 6.7900

Alpha (°): 90.0000

Beta (°): 90.0000

Gamma (°):120.0000

Calculated density (g/cm^3): 2.22

Volume of cell (10^6 pm^3): 35.88

Z: 4.00

RIR: 2.37

References

Primary reference: Calculated from ICSD using POWD-12++, (1997) Structure: Hassel, O., Z. Phys., 25, 317, (1924)

Peak list

No. h k l d [A] 2Theta[deg] I [%]

1 0 0

2 3.39500 26.228 100.0

2 1 0 0 2.13908 42.214 2.9

3 1 0 1 2.04023 44.365 13.8

4 1 0 2 1.80980 50.381 2.6

Stick Pattern

Name and formula

Reference code: 00-041-1487

Mineral name: Graphite-2H Common name: cliftonite

PDF index name: Carbon Crystallographic parameters

Crystal system: Hexagonal (六边形) Space group: P63/mmc

Space group number: 194

a (?): 2.4704

b (?): 2.4704

c (?): 6.7244

Alpha (°): 90.0000

Beta (°): 90.0000

Gamma (°):120.0000

Calculated density (g/cm^3): 2.24

Measured density (g/cm^3): 2.16

Volume of cell (10^6 pm^3): 35.54

Z: 4.00

RIR: 7.78

Subfiles and Quality

Subfiles: Inorganic （无机的）

Mineral

References

Primary reference: Sanc, I., Polytechna, Foreign Trade Corporation, Panska,

Czechoslovakia., ICDD Grant-in-Aid, (1990) Structure: Aust. J. Chem., 42, 479, (1989)

Peak list

No. h k l d [A] 2Theta[deg] I [%]

1 0 0

2 3.3756

3 26.382 100.0

2 1 0 0 2.13865 42.22

3 2.0

3 1 0 1 2.03901 44.393 6.0

4 1 0 2 1.80737 50.453 1.0

Stick Pattern