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Preparation method of composite prefabricated part lining for high-temperature lime rotary kiln

A technology of lime rotary kiln and prefabricated parts, which is applied in lime production, rotary drum furnace, lighting and heating equipment, etc. It can solve the problems of low flushing service life, high-temperature lime rotary kiln lining is not resistant to erosion, etc.

Active Publication Date: 2020-10-23
SHANDONG LUMING HIGH TEMPERATURE MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for preparing a composite prefabricated lining for a high-temperature lime rotary kiln, using magnesia-chrome sand and magnesia-alumina spinel to prepare a rotary kiln lining, which has high temperature resistance, corrosion resistance and wear resistance Good and non-ringing characteristics, which solve the problems of high-temperature lime rotary kiln lining not being resistant to erosion and low erosion service life, and improve production efficiency

Method used

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  • Preparation method of composite prefabricated part lining for high-temperature lime rotary kiln
  • Preparation method of composite prefabricated part lining for high-temperature lime rotary kiln
  • Preparation method of composite prefabricated part lining for high-temperature lime rotary kiln

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Effect test

Embodiment 1

[0055] A method for preparing a composite prefabricated liner for a high-temperature lime rotary kiln according to the present invention comprises the following steps:

[0056] (1) Weigh and prepare raw materials;

[0057] (2) Classify the prepared raw materials and put them into the material pulverizer, crush the materials to the required particle size according to the requirements, and then mix evenly, add water accounting for 4-6wt% of the total weight of the raw materials, and grind at room temperature 5-25 degrees Celsius Stir evenly in the environment;

[0058] (3) pour the mixed material mixed with water into the model to obtain the billet;

[0059] (4) Bake the blank at low temperature until it is shaped;

[0060] Wherein, the raw material described in the step (1) comprises the following components according to the parts by mass:

[0061] 10-20 parts of alumina-based magnesium-aluminum spinel particles with a particle size of 10-5 mm;

[0062] 10-20 parts of alumi...

Embodiment 2

[0096] Such as figure 1 with 2 As shown, in this embodiment, the material pulverizer includes a grinding outer casing, and the grinding outer casing includes an upper material shell, an input material shell, a grinding material shell and a discharge shell, and the upper material shell , the feeding shell, the milling shell and the discharging shell are connected together from top to bottom in order, and the main cavity and the auxiliary cavity are arranged in the feeding shell, and the crankshaft is arranged horizontally in the main cavity, and the front end shaft of the crankshaft passes through the bearing seat Installed on the side wall of the main cavity, the rear end shaft of the crankshaft is connected to the crankshaft drive motor, and the crankshaft drive motor is fixed on the side wall of the other side of the main cavity; the crankshaft includes at least three connecting rod journals ; The auxiliary cavity communicates with the feed shell; the feed shell is in the s...

Embodiment 3

[0105] Such as image 3As shown, the material pulverizer also includes a grinding ball rotation driving device, which is arranged below the grinding balls in the grinding material sub-chamber; the grinding connecting rod includes an upper connecting rod body and a lower connecting rod body , the upper connecting rod body and the lower connecting rod body are coaxially rotatably connected, and the lower end of the lower connecting rod body is fixedly connected with the grinding ball as a whole; a strip-shaped screw hole is set upward from the bottom of the grinding ball, and the strip-shaped screw hole is upward It extends into the lower connecting rod body; the grinding ball rotation driving device includes a fixed sieve plate, which is horizontally fixed below the grinding material sub-chamber, and sieve holes are set on the fixed sieve plate; the upper center of the fixed sieve plate Vertically fix the rotating driving screw shaft, the upper end of the rotating driving screw...

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Abstract

The invention discloses a preparation method of a composite prefabricated part lining for a high-temperature lime rotary kiln, and belongs to the technical field of refractory material production equipment. The preparation method is characterized by comprising the following steps: (1) weighing and preparing raw materials; (2) putting the prepared raw materials into a material crusher in a classified manner, respectively crushing the raw materials into required particle sizes according to requirements, then uniformly mixing, adding water the weight of which accounts for 4-6wt% of the total weight of the raw materials, and uniformly stirring in an environment at the normal temperature of 5-25 DEG C; (3) pouring and molding the mixed material stirred by adding water in a model to obtain a blank; and (4) baking the blank at low temperature until the blank is shaped. The rotary kiln lining is prepared from the magnesium-chromium sand and the magnesium aluminate spinel, has the characteristics of high temperature resistance, corrosion resistance, good wear resistance and no ring formation, solves the problems that the high-temperature lime rotary kiln lining is not resistant to corrosionand short in scouring service life, and improves the production efficiency.

Description

technical field [0001] The invention belongs to the technical field of refractory material production equipment, and in particular relates to a preparation method for a composite prefabricated inner lining for a high-temperature lime rotary kiln. Background technique [0002] At present, domestic lime rotary kilns generally use aluminum-silicon series fired bricks or prefabricated parts as linings. In lime kilns at high temperatures above 1450°C, under calcium-rich conditions, calcium oxide and alumina will react to form calcium aluminate CA -C7A12 and other low-melting materials, the working lining is damaged quickly under the scour of high-temperature airflow and lime, and the service life is greatly reduced. These refractory materials are not suitable for the current trend of reducing the lime burning rate of high-temperature lime rotary kilns. Therefore, there is an urgent need for a rotary kiln lining refractory material with good erosion resistance and erosion resistan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/047C04B35/443C04B35/66C04B35/622B02C1/14B02C21/00B02C23/00F27B7/28
CPCC04B35/047C04B35/443C04B35/66C04B35/622B02C1/14B02C21/00B02C23/00F27B7/28C04B2235/3418C04B2235/5427C04B2235/5436C04B2235/3208C04B2235/3217C04B2235/3272C04B2235/3222C04B2235/447C04B2235/96C04B2235/9669Y02P40/40
Inventor 傅修文鲍石鹏李畅王秀马朋朋
Owner SHANDONG LUMING HIGH TEMPERATURE MATERIAL TECH
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