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Supermicro crusher using high strength ceramic material as collision grinding part

A ceramic material, ultra-fine grinding technology, applied in grain processing and other directions, can solve the problems of pollution of pharmaceutical raw materials, difficulty in breaking the walls of Ganoderma lucidum spores, loss of medicinal value, etc.

Inactive Publication Date: 2006-06-14
SUN YAT SEN UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mechanical equipment used in this field, such as ultra-fine grinding, micro-grinding, ultra-micro-grinding and other devices came into being, through strong extrusion, shearing, impact, impact, collision, grinding, friction, cutting rubbing, cavitation explosion, Mechanical pulverization such as turbulence can achieve the purpose of ultrafine pulverization of materials, but at the same time, it also causes superfine pulverization of materials in the process of ultrafine pulverization such as metal materials hitting grinding parts, impact, collision, grinding, cutting rubbing, and friction. Different degrees of heavy metal powder particles are exfoliated and released, such as chromium, nickel, cadmium, titanium, iron, copper, zinc, lead, aluminum, arsenic and other heavy metals, so that the pharmaceutical raw materials are seriously polluted during the ultrafine grinding process and lose their original properties. medicinal value
Taking Ganoderma lucidum spores as an example, the superfine pulverization device usually pulverizes the Ganoderma lucidum spores. Although the wall breaking rate is not the same, it is difficult to break the wall of the Ganoderma lucidum spores, which causes the metal material in the superfine pulverization device to hit the grinding parts during the wall breaking process. It is inevitable to release a large amount of heavy metal powder particles in the intense impact and wear with the crushed materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1. The purity of zirconia raw material is 92%, and the particle size is 0.6-0.8 μm.

[0017] 2. The specifications of the cylinder lining and grinding body of the vibrating mill are prefabricated according to the cylinder model specification. The thickness of the cylinder lining is 35mm; the diameter of the ball grinding body is 18mm.

[0018] 3. Add 0.2% (weight ratio) of toughening agent yttrium oxide before the formation of cylinder lining and grinding body green body, and the raw material purity of toughening agent is 93%.

[0019] 4. The sintering temperature of the green body of the special high-strength ceramic cylinder lining and grinding body is 1620°C.

[0020] 5. Embed the prepared special high-strength ceramic cylinder lining in the vibration mill cylinder, and place 180 pieces of special high-strength ceramic ball mills.

[0021] 6. When crushing materials, put refrigerant dry ice into the cylinder before crushing, and the amount of input is 0.5 times the ...

Embodiment 2

[0024] 1. The purity of zirconia raw materials is 95%, and the particle size is 0.8-1 μm.

[0025] 2. The specifications of the cylinder lining and grinding body of the vibrating mill are prefabricated according to the cylinder model specification. The thickness of the cylinder lining is 50mm; the diameter of the ball mill is 20mm.

[0026] 3. Add 2% (weight ratio) of toughening agent yttrium oxide before the formation of cylinder lining and grinding body green body, and the raw material purity of toughening agent is 96%.

[0027] 4. The sintering temperature of the green body of the special high-strength ceramic cylinder lining and grinding body is 1580 °C.

[0028] 5. Embed the prepared special high-strength ceramic cylinder lining in the vibration mill cylinder, and place 300 pieces of special high-strength ceramic ball mills.

[0029] 6. When crushing materials, put refrigerant dry ice into the barrel during the crushing process, and the input amount is 0.7 times the weig...

Embodiment 3

[0032] 1. The purity of zirconia raw material is 96%, and the particle size is 0.7-0.9 μm.

[0033] 2. The specifications of the cylinder lining and grinding body of the vibrating mill are prefabricated according to the cylinder model specification. The thickness of the cylinder lining is 40mm; the diameter of the short cylinder is 22mm and the length is 40mm.

[0034] 3. Add 3% (weight ratio) of yttrium oxide as a toughening agent before forming the lining of the cylinder and the green body of the grinding body, and the purity of the raw material of the toughening agent is 97%.

[0035] 4. The sintering temperature of the green body of the special high-strength ceramic cylinder lining and grinding body is 1588°C.

[0036] 5. Embed the prepared special high-strength ceramic cylinder lining in the vibration mill cylinder, and place 295 pieces of special high-strength ceramic short cylinders.

[0037] 6. When crushing materials, put refrigerant dry ice into the barrel during th...

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Abstract

The invention relates to a superfine pulverization device with special high-strength ceramics as the liner of the vibrating mill cylinder and the grinding body. The structure of this device is similar to the vibrating mill of the usual industrial superfine pulverizing device. It is characterized by the vibrating mill cylinder liner and grinding body made of special high-strength ceramic materials. The high-strength ceramic material is prepared by controlling the purity and particle size of zirconia and toughening agent raw materials and sintering at a specific high temperature. Using this device, the material to be ultrafinely pulverized can reach 0.5-2 μm, and the device is suitable for ultrafine pulverization and wall breaking of Ganoderma lucidum spores or Chinese medicinal materials. According to testing, after crushing, the wall-breaking rate of Ganoderma lucidum spores or Chinese herbal medicine micropowder reaches 99.9%, which is non-polluting and free of chromium, nickel, cadmium, titanium, iron, copper, zinc, lead, aluminum, arsenic and other heavy metal powder particles. out. It can be further added into medicine and health food, so that the medicinal value of Ganoderma lucidum spores or Chinese medicinal materials can be more widely used.

Description

technical field [0001] The invention relates to a superfine pulverization device with special high-strength ceramics as the lining of the vibrating mill cylinder and grinding body. The superfine pulverization of the material can reach 0.5-2 μm. The device is suitable for superfine pulverization of ganoderma lucidum spores or Chinese medicinal materials. . No heavy metal pollution was detected in the pulverized powder. Background technique [0002] The ultrafine particle crushing of Chinese herbal medicines and the internationalization of Chinese medicines are a hot topic in modern manufacturing technology. Mechanical equipment used in this field, such as ultra-fine grinding, micro-grinding, ultra-micro-grinding and other devices came into being, through strong extrusion, shearing, impact, impact, collision, grinding, friction, cutting rubbing, cavitation explosion, Mechanical pulverization such as turbulence can achieve the purpose of ultrafine pulverization of materials, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B02C17/14B02C17/22
Inventor 刘昕王江海吴佳扬
Owner SUN YAT SEN UNIV