The electrical stone powder (Tourmaline)
tourmaline chemical composition is complex, is take contains the boron as the characteristic aluminum, the sodium⑻⒚ curtain numerous lip loess hill construction handle?Salty mineral. Produces generally in the flowered hillock pegmatite and the high temperature was mad in the hydrothermal ore deposit, is one of one kind of typical high temperature pneumatogenic minerals.
The electrical stone powder mainly is the crystal tourmaline fragments or the textile fiber tourmaline manufacture becomes. Has following use approximately.
1, electronics industry. In electronics industry, available electrical stonemason's workshop radio industrial used wave length adjuster, in polariscope polaroid. Crystal complete, not curving, non-crack tourmaline, may make the piezometer which in the determination air and the water ramming uses.
2nd, sound electricity material. Tourmaline available in sound navigation and ranging part. The general use natural tourmaline crystal, should better be the achromatic color or the pink valuable stone step crystal.
3rd, on test material standard, instrument and industrial equipment primary device. When approves the piezoelectricity manometer and the measuring instrument, often uses the tourmaline to take the standard. In the boron experiment, the tourmaline is one kind of control material, because its itself is one kind inert contains the boron compound. In experiment which in the inspection fertilizer the water-soluble boron possibility affects, also may use the electrical stonemason's workshop standard. Many science and industry instrumentation tourmaline, namely tourmaline tong, this is a simple bench-scale equipment, can demonstrate the light the polarization. Because the tourmaline not only is the thermoelectricity also is piezoelectricity, is said, when heating or compression all can produce the electricity, therefore it is surveys high-pressured and the fluid compressibility instrument one kind of part, the medicine of a hot nature gauge is surveys the radiation to be mad the intensity the early time instrument, it also is relies on the tourmaline thermoelectricity characteristic.
4, electromagnetic wave protector. (CN 2358663Y) introduced in a newest practical patent one harmful electromagnetism protector facture, it is composed by the laminated structure, first for tourmaline particle level; Second is a glue line; Third is the plastic film level; Fourth also is a glue line; Fifth is the paper level. This kind of protector may prevent the harmful electromagnetic wave attack human body, but transforms it as to the human body harmless remote infrared ray. It may widely use in the automobile cab, the computer handling room, the electric arc operates the workshop, the transformer substation and so on each place as well as the mechanical games, the television, the microwave oven, the electric blanket, the telephone, the handset and so in many kinds of electrical equipment. 
5, tourmaline ceramics ball. (CN 1222494A) specially introduced the use tourmaline system ceramics ball technology in an invention patent. It grinds to the diameter by the tourmaline is 2 6μm~140μm size particles, accounts for the gross weight 3%~98%; The clay accounts for the gross weight 97%~2%; After watering agitation, formation dry agglutination for diameter 0 5mm~50mm pellets. It may strengthen the tap water activeness or make in the air the anoin to increase, but widely uses in the tap water activation, the sewage treatment, the crops executes the spraying of water and the purification air various domains.
6, attrition material. Tourmaline degree of hardness is big, is generally 7~7 5, may take the attrition material, like this also may massively use some non-electronic industrial used fine grain tourmaline, enable the precious tourmaline resources to obtain the full use. By above obviously, the development tourmaline has the necessity very much as the industry mineral applied research, specially in had the tourmaline resources area, like places such as Shandong, Jilin, should the tourmaline applied research and the development work mentioned the agenda comes up.
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