Composition of medical stone

Maifanshi is silicic acid, aluminum oxide as a main component. In addition, it also contains igneous rocks composed of inorganic substances such as iron , calcium, manganese and magnesium which are essential for the human body. The phenocrysts and quartz crystals of weathered, clayed feldspar are embedded in the pale yellow-brown stone base, and iron oxide formed by the oxidation of biotite constitutes a loose appearance.
The ingredients contained in the medical stone (according to the analysis of Dr. Yi Fushou, Pharmacy):
(1) ferrous oxide 1.29%; (2) iron oxide 1.40%; (3) anhydrous phosphorus (phosphoric anhydride) 0.26%; (4) manganese oxide 0.02%; (5) magnesium 3.55%; (6) potassium 3.19 %; (7) adsorbed water 1.10%; (8) calcium oxide 2.00%; (9) sodium 3.16%; (10) titanium 0.30%; (11) combined water 0.90% (+). Moreover, the medical stone does not contain radioactivity. (The Department of Radiology of the University of Pharmaceutical Sciences.)
Arsenic containing heavy metals on the problem, according to Japanese Pharmacopoeia prescriptions former state test subject purity natural aluminum silicate, which according to Japanese Pharmacopoeia eighth prescription pharmacy arsenic test method, GUTZIT test method, the result is: heavy metal 40 ppm or less and arsenic 4 ppm or less are all below the allowable value.
It can of course be said that the composition of the medical stone is non-toxic and is acceptable as an internal medicine.

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Types of gasketed plate heat exchangers

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