? Processing method of xuanjing stone

source

this product is a small flaky gypsum Gypsrm that has been formed for a long time.

processing method

1. purification: wash the soil (pharmacopoeia 63).

2. Cutting: breaking when used (Pharmacopoeia 63).

3. Canning:

1. Forging: Take the refined stone, put it in an iron can, put it on a strong fire and forge it until the refined stone is red, take it out, air-cool, grind it and sieve it. Take the fine powder for later use (Guizhou).

2. vinegar quenching: put xuanjing stone in a crock and put it in charcoal fire, forge it until it is red, pour it out, spray it evenly with vinegar and grind it fine. 1kg for each refined stone, 1kg for vinegar (Integration).