Magnetic auricular-point pressing bean and preparation method thereof
An auricular point and magnetic technology, which is applied in the field of magnetic ear point pressing beans and its preparation, can solve the problems of low density, weak magnetic properties of pressed beans, and low magnetic powder content, and achieves the effect of simple operation.
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[0020] The invention provides a preparation method of magnetic auricular point pressing beans, which comprises the following steps:
[0021] mixing raw materials including iron oxide and strontium carbonate to obtain a mixture;
[0022] The mixture is pelletized and sintered in turn to obtain sintered pellets;
[0023] The sintered ball is magnetized to obtain magnetic auricular pressure beans.
[0024] The invention mixes the raw materials including iron oxide and strontium carbonate to obtain the mixture. In the present invention, the molar ratio of iron oxide to strontium carbonate is preferably 5.4˜6.2:1, more preferably 6:1. The present invention has no special requirements on the mixing method, and a mixing method well known to those skilled in the art can be used. In the present invention, the purity of the iron oxide is preferably above 72%, and the purity of the strontium carbonate is preferably above 96%; the particle diameters of the iron oxide and strontium carb...
Embodiment 1
[0037] Using JHT-20 desktop dual-motion dry powder intensive mixer (barrel speed 25rpm, blade speed 63rpm, motor power 0.55kW), mix 911.7kg of iron oxide and 140.9kg of strontium carbonate raw materials for 10 seconds, during the mixing process Add the right amount of binder directly. The binder is a polyvinyl alcohol aqueous solution with a polyvinyl alcohol content of 10wt.%, and the addition amount is 3-6wt.% of the solid mixture to obtain a mixture; the mixture is pressed into balls to obtain a ball with a diameter of 0.6mm. Material balls; sinter the material balls at 1100°C for 1.5 hours to obtain sintered balls; use a rotary vibrating screen to screen the sintered balls to obtain sintered balls with a diameter not greater than 0.6mm; , add 1.5wt.% epoxy resin, 0.3wt.% silicon dioxide and 1.5wt.% alumina powder relative to the sintered ball for coating. When the epoxy resin on the surface of the sintered ball is cured, that is A coated spherical composite material with ...
Embodiment 2
[0039] Using JHT-20 desktop dual-motion dry powder intensive mixer (barrel speed 25rpm, blade speed 63rpm, motor power 0.55kW), 896kg of iron oxide and 147.6kg of strontium carbonate raw materials were mixed for 10 seconds. Add an appropriate amount of binder. The binder is a polyvinyl alcohol aqueous solution with a polyvinyl alcohol content of 10 wt%, and the addition amount is 3 to 6 wt.% of the solid mixture to obtain a mixture; the mixture is pressed into balls to obtain a material with a diameter of 0.8mm. balls; sinter the balls at 1250°C for 2 hours to obtain sintered balls; sieve the sintered balls with a rotary vibrating screen to obtain sintered balls with a diameter not greater than 0.8mm; Add 1.5wt.% epoxy resin, 0.3wt.% silicon dioxide and 1.5wt.% alumina powder relative to the sintered ball for coating. When the epoxy resin on the surface of the sintered ball is cured, the surface Off-white coated spherical composite material, the thickness of the non-magnetic ...
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Abstract
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