The preparation of black plaster does not include

The preparation of black plaster does not include abortion.

Preparation of quasi-black plaster: stir-frying and extracting. Put sesame oil in the pot and heat it on low heat. When the oil temperature reaches about 40 ~ 80℃, put the raw Chinese medicine into the pot and fry it until it is cooked. The order of putting the medicine into the pot is divided into frying first and then dropping according to the different properties of the medicine. Refine. Take the above medicinal oil and continue to boil until the oil temperature rises to 320 ~ 330℃. Remove the boiled medicinal oil from the fire, cool it slightly, pour it into a basin for precipitation, filter it with gauze to ensure the quality of the plaster, and then put the filtered oil back into the pot and simmer it with slow fire; Xia Dan refers to the formation of fatty acid lead salt by adding eight red lead in refined oil, which can make the oil eventually become paste; Fire poison is that some toxic or strongly stimulating lead compounds are generated during the reaction between oil and lead, which can be removed by dissolving in water and soaking. Put the detoxified plaster block into a pot and heat it with steam or hot water bath to melt it, and stir it evenly, keeping the temperature at 70-90℃. After the plaster is completely melted, the fine materials are added and stirred evenly, and the plaster can be spread on the mounting material according to the specified amount.

The traditional black plaster is an external lead plaster made by frying edible plants, removing residues, reacting with plumbum preparatium at high temperature to make paste, and coating it on the mounting material. Black plaster is generally dark brown solid, oily and delicate, old and tender, and can be attached to the skin after heating, so it is not easy to move.