Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for producing large-crystalline fused magnesia by one-step method

A technology of fused magnesia and crystallization, which is applied in the field of refractory materials, can solve problems such as high energy consumption, high input cost, and long production process, and achieve the effects of reducing process flow, reducing energy consumption, and improving quality

Inactive Publication Date: 2017-10-13
张世东
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned preparation method has the disadvantages of high energy consumption, long production process, and high input cost.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The method for producing large-crystal fused magnesia in one-step method comprises the following specific steps:

[0014] (1) Magnesite selection: choose MgCO 3 Magnesite ore with a MgO content of 45% -47.81%;

[0015] (2) Grinding: the magnesite ore is made into a powder with a particle size of 3 mesh --- 3500 mesh;

[0016] (3) Ball pressing: add the powder obtained in step (2) to the sintering agent and add water to stir evenly, and then press it into a ball pressing machine with a ball diameter of 3mm-200mm;

[0017] (4) Sintering: Finally, put the pellets into the submerged arc furnace for roasting to produce large crystal fused magnesia.

[0018] The large crystalline fused magnesia produced in this embodiment, the sintering agent that adopts comprises magnesium oxide, graphite and borax, promptly is made by weight percentage by following raw material:

[0019] Magnesite ore particle size 3 mesh -3500 mesh 80%;

[0020] Magnesium oxide particle size 3 mesh -35...

Embodiment 2

[0024] The method for producing large-crystal fused magnesia in one-step method comprises the following specific steps:

[0025] (1) Magnesite selection: choose MgCO 3 Magnesite ore with a MgO content of 45% -47.81%;

[0026] (2) Grinding: the magnesite ore is made into a powder with a particle size of 3 mesh --- 3500 mesh;

[0027] (3) Ball pressing: add the powder obtained in step (2) to the sintering agent and add water to stir evenly, and then press it into a ball pressing machine with a ball diameter of 3mm-200mm;

[0028] (4) Sintering: Finally, put the pellets into the submerged arc furnace for roasting to produce large crystal fused magnesia.

[0029] The large crystalline fused magnesia produced in this embodiment uses sintering agents including magnesium oxide and graphite, which are made of the following raw materials by weight percentage:

[0030] Magnesite ore particle size 3 mesh -3500 mesh 90%;

[0031] Magnesium oxide particle size 3 mesh -3500 mesh 7%;

...

Embodiment 3

[0034] The method for producing large-crystal fused magnesia in one-step method comprises the following specific steps:

[0035] (1) Magnesite selection: choose MgCO 3 Magnesite ore with a MgO content of 45% -47.81%;

[0036] (2) Grinding: the magnesite ore is made into a powder with a particle size of 3 mesh --- 3500 mesh;

[0037] (3) Ball pressing: add the powder obtained in step (2) to the sintering agent and add water to stir evenly, and then press it into a ball pressing machine with a ball diameter of 3mm-200mm;

[0038] (4) Sintering: Finally, put the pellets into the submerged arc furnace for roasting to produce large crystal fused magnesia.

[0039] The large crystalline fused magnesia produced in this embodiment, the sintering agent that adopts comprises magnesia, borax, promptly is made by weight percentage by following raw material:

[0040] Magnesite ore particle size 3 mesh -3500 mesh 60%;

[0041] Magnesium oxide particle size 3 mesh -3500 mesh 20%;

[004...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a method for producing large-crystalline fused magnesia by a one-step method. The method comprises the following steps: magnesite concentration: selecting magnesite in which the content of MgO in MgCO3 is 45-47.81 percent; grinding: making the magnesite into powder; ball-pressing: adding the powder into a sintering agent, adding water to uniformly stir and pressing into balls in a ball pressing machine; finally putting the balls in a submerged arc furnace for roasting to produce the large-crystalline fused magnesia. The method provided by the invention has the benefits that the different grades of large-crystalline magnesia can be produced by the one-step method according to the different contents of the MgCO3 and the MoG in the magnesia, namely 99 percent of large-crystalline magnesia, 98.5 percent of large-crystalline magnesia, 98 percent of large-crystalline magnesia and 97 percent of large-crystalline magnesia respectively; compared with the prior art, the technological process is reduced, the energy consumption is reduced, and the produced large-crystalline fused magnesia is enabled to have better quality.

Description

technical field [0001] The invention relates to a method for producing large crystal fused magnesia in one step, and belongs to the technical field of refractory materials. Background technique [0002] In the preparation of the existing large crystal fused magnesia, it is necessary to lightly burn high-quality magnesite ore first, and then carry out secondary calcination in a corresponding kiln, and finally produce large crystal fused magnesia. The above-mentioned preparation method has the disadvantages of high energy consumption, long production process, and high input cost. Contents of the invention [0003] The invention provides a method for producing large-crystal fused magnesia in one step, with the purpose of reducing technological process and reducing energy consumption. [0004] The concrete technical scheme of the present invention is as follows: the method for one-step method production big crystal fused magnesia comprises the following concrete steps: [00...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C04B2/10
CPCC04B2/102C04B2/104
Inventor 张世东
Owner 张世东