A kind of preparation method of skutterudite preheating cement

Abstract

The invention discloses a method for preparing skutterudite preheated cement, which belongs to the technical field of cement preparation. A method for preparing skutterudite preheated cement utilizes double degaussing components in a powerful degaussing cylinder to demagnetize cement at high temperature and demagnetize cement, namely The high-temperature heat storage heat conduction tube and the serpentine conductive column perform high-temperature autoclaving and "ionization" on the falling cement raw materials respectively, and demagnetize the magnetic substances in the cement raw materials, and the high-temperature degaussing and power-on degaussing are carried out at the same time to achieve double enhanced demagnetization. Purpose: When the degaussed cement raw material falls to the lower end of the powerful degaussing cylinder, use the miniature magnetic detector installed at the side end of the leaking material connection pipe to detect the content of magnetic substances inside, so as to ensure that the content of magnetic substances in the cement raw material is reduced to the minimum. Prepare qualified cement raw materials into cement, basically eliminate the influence of magnetic substances on cement quality, significantly improve the stability of cement buildings, and improve the safety factor of high-rise buildings.

Description

technical field [0001] The invention relates to the technical field of cement preparation, and more specifically, relates to a preparation method of skutterudite preheated cement. Background technique [0002] The composition of skutterudite is CoAs3, containing Co20.77%, often containing a small amount of iron and nickel, equiaxed crystal system, and the crystal is in the shape of cube, octahedron or both. Aggregates are often dense granular, tin white, gray-black streaks. Metallic luster, Mohs hardness 5.5-6, density 6.5-6.8. [0003] In the field of cement grinding, due to the low energy utilization rate and grinding efficiency of the tube mill, it is gradually replaced by high-efficiency grinding equipment in terms of energy-saving grinding. It is superior and cannot be replaced by other high-efficiency grinding equipment at present. Therefore, roller presses, vertical mill pre-grinding and semi-final grinding systems have become the mainstream of development. [0004...

AI Technical Summary

Problems solved by technology

[0003] In the field of cement grinding, due to the low energy utilization rate and grinding efficiency of the tube mill, it is gradually replaced by high-efficiency grinding equipment in terms of energy-saving grinding. It is superior and cannot be replaced by other high-efficiency grinding equipment at present. Therefore, roller presses, vertical mill pre-grinding and semi-final grinding systems have become the mainstream of development.

[0004] The force body of the vertical mill is a column-plate, and the energy utilization rate of the column-plate is relatively high. Using the vertical mill to replace the first chamber crushing function of the tube mill has achieved very good results in cement grinding, so the vertical mill pre The grinding system has been developed, but the vibration of the vertical mill has always been a problem that plagues its stable operation. When there are large particles and metal impurities in the material entering the vertical mill, the vertical mill will vibrate with a large amplitude, and in severe cases, the vertical mill will vibrate. Stopping will not only affect the stable operation of the vertical mill, but also metal and other difficult-to-grind impurities will cause damage to the roller surface and grinding disc of the vertical mill

[0008] It can be seen from the above patents that part of the magnetic substances in the raw materials need to be removed before cement preparation, but the removal effect of the magnetic substances in the cement raw materials in the prior art is poor, and there are still many magnetic substances in the preparation, which reduces the cement product. Quality, after being used in building construction, will affect the stability of the building, especially in the current high-rise buildings, the quality of the cement used in the building is not up to standard, and there will be great potential safety hazards

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