Preparation method of skutterudite preheated cement

Abstract

Belonging to the technical field of cement preparation, the invention discloses a preparation method of skutterudite preheated cement. The preparation method of skutterudite preheated cement utilizesa dual demagnetization component in a powerful demagnetizing cylinder to realize high-temperature demagnetization and electrified demagnetization of cement, i.e. high temperature heat storage and heatconductive pies and snake-shaped conductive columns respectively perform high-temperature autoclaving and "ionization" on the falling cement raw material for demagnetization treatment on magnetic substances in the cement raw material, and high-temperature demagnetization and electrified demagnetization are carried out simultaneously to reach the purpose of dual reinforced demagnetization, when the demagnetized raw material falls to the lower end of the powerful demagnetizing cylinder, and a miniature magnetic detector disposed on a side of a leaking material receiving pipe is utilized to detect the content of interior magnetic substances, thus ensuring minimization of the magnetic substance content of the cement raw material. The method provided by the invention prepares qualified cementraw material into cement, basically eliminates the influence of magnetic substances on the cement quality, significantly improves the stability of cement buildings and enhances the safety coefficientsof 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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