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Method for detecting kiln coating suspension performance of fireproof brick for cement kiln

A detection method and technology for refractory bricks, which are applied in the field of detection, can solve the problems of not well reflecting the actual kiln skin performance of refractory bricks used in cement kilns, the static method has many irrelevant factors, and the dynamic method test operation is cumbersome, etc. The effect of performance detection method, low experimental cost and stable data

Inactive Publication Date: 2013-01-16
TONGDA REFRACTORY TECH CO LTD +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In recent years, counterparts at home and abroad have made a lot of explorations on the performance testing methods of refractory bricks used in cement kilns, which can be roughly divided into two types: dynamic method and general static method. The dynamic method test operation is cumbersome and cannot be quantified. ; There are many irrelevant factors in the general static method, the operability of the experiment is not strong, and the repeatability of the data is poor, which cannot well reflect the actual performance of the refractory bricks used in cement kilns.

Method used

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  • Method for detecting kiln coating suspension performance of fireproof brick for cement kiln
  • Method for detecting kiln coating suspension performance of fireproof brick for cement kiln
  • Method for detecting kiln coating suspension performance of fireproof brick for cement kiln

Examples

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Effect test

Embodiment 1

[0046] In this embodiment, the top 5mm of the moment refractory brick is used as the shear point, and the following steps are used to detect the magnesia-chrome refractory brick:

[0047] 1. Preparation of refractory brick samples:

[0048] (1) Cement raw material slurry preparation: Weigh a certain amount of cement raw material, pour it into a mortar and grind it until it passes through a 0.088mm standard sieve, then add the same amount of glycerol, mix and grind evenly, and then set aside;

[0049](2) Cut out 3 cuboids with a length of 50 mm, a width of 50 mm and a height of 120 mm from the refractory brick to be tested. The error of each side is not more than 1 mm. ;

[0050] (3) if figure 1 , on a rectangular surface of the cut cuboid, take a point at the lower end of one of the long sides 5 mm, and another point at the upper end of the other long side at 5 mm, draw a line connecting the two points, and draw a line perpendicular to the rectangular surface Cut out 2 test...

Embodiment 1~18

[0064] Take magnesia-chrome bricks, dolomite bricks, and magnesia-alumina spinel bricks respectively. The specific implementation steps are the same as in Example 1. The test results of the refractory bricks hanging in the kiln are shown in the following table:

[0065] Table 1 Test results of skin force of each refractory brick hanging kiln

[0066] 。

[0067] It can be seen from Table 1 that the overall order of the skin force data of each refractory brick hanging kiln from large to small is: dolomite brick > magnesia chrome brick > spinel magnesia brick, and the results are consistent with the actual situation of cement rotary kiln lining bricks The data are relatively stable at the shear distance of each refractory brick at 15~30mm, and the error between the test value of each point and the average value is not more than 3.3%. The size of the results has little influence on the data, and it is not easy to cause errors. It can be used to characterize the actual hanging ...

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Abstract

The invention discloses a method-static shearing method for detecting the kiln coating suspension performance of a fireproof brick for a cement kiln, and a principle, equipment, a sample, steps and result calculation thereof. The static shearing method is low in experimental expense, strong in operability and quantizable, especially the shearing position is proper, the data is stable and good in repeatability in the shearing range, the influence caused by errors is greatly reduced, the practical kiln coating suspension performance of the fireproof brick for the cement kiln can be really reflected, the conventional fireproof material detection equipment is made full use of, and the conventional performance detection method for the fireproof brick is further improved.

Description

technical field [0001] The invention relates to a detection method, in particular to a detection method for the hanging kiln skin performance of refractory bricks used in cement kilns. Background technique [0002] As a commonly used kiln lining material in cement kiln, refractory brick is one of the indispensable structural materials and functional materials of cement kiln system. The operating rate, clinker output, and unit surface heat loss play a decisive role. [0003] The so-called kiln skin is a layer of sintered clinker attached to the inner surface of the kiln lining of the rotary kiln. This ability to form a kiln skin on the surface of the refractory brick is called kiln skin hanging. Appropriate hanging kiln skin can not only protect the refractory bricks, reduce the consumption of kiln lining, act as a heat transfer medium, prolong the reaction time of materials in the kiln, but also store heat energy, reduce the heat loss of the kiln shell to the surroundings, ...

Claims

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Application Information

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IPC IPC(8): G01N3/08
Inventor 冯运生李平高长贺李燕京周伟占华生马淑龙王治峰马飞夏文斌
Owner TONGDA REFRACTORY TECH CO LTD
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