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Calcination equipment for purifying and whitening natural anhydrite and its production process

Anhydrous gypsum, production process technology, applied in inorganic chemistry, chemical instruments and methods, calcium/strontium/barium sulfate and other directions, can solve the shortage of medium and high-grade anhydrite products, the saturation and excess of low-grade anhydrite products, and anhydrite. The quality and whiteness cannot be satisfied, so as to achieve the effect of energy saving, emission reduction and production improvement.

Active Publication Date: 2019-04-19
邵阳金拓科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country is rich in natural anhydrite resources, but due to its own nature and the constraints of deep processing technology, the quality and whiteness of anhydrite processed by traditional techniques cannot meet the requirements of modern industrial applications, resulting in a surplus of low-grade anhydrite products in China, while medium and high-grade anhydrite products Relative shortage of gypsum products

Method used

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  • Calcination equipment for purifying and whitening natural anhydrite and its production process
  • Calcination equipment for purifying and whitening natural anhydrite and its production process
  • Calcination equipment for purifying and whitening natural anhydrite and its production process

Examples

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Effect test

Embodiment 1

[0027] A calcining equipment for purifying and whitening natural anhydrous gypsum, which includes a rotary kiln 10, a plurality of heating inner cylinders 1002 are arranged in the middle of the rotary kiln 10; the heating inner cylinders 1002 are fixed in the rotary kiln through a support frame 1001 10; the heating inner cylinder 1002 is provided with an independent working burner 1003; the rotary kiln 10 is provided with a preheating burner 1004 at the outer end of the heating inner cylinder 1002.

[0028] Preferably, the number of the heating inner cylinders 1002 is 3, arranged in a triangle.

[0029] A production process for purifying and whitening natural anhydrous gypsum, which includes the following steps:

[0030] a. Anhydrite enters the feed bin 1, and is sent to the primary crusher 3 through the feeder 2 for a primary crushing;

[0031] b. The anhydrite after primary crushing is lifted to the buffer bin 5 by the first hoist 4, and then enters the secondary crusher 6 for secon...

Embodiment 2

[0038] A calcining equipment for purifying and whitening natural anhydrous gypsum, which includes a rotary kiln 10, a plurality of heating inner cylinders 1002 are arranged in the middle of the rotary kiln 10; the heating inner cylinders 1002 are fixed in the rotary kiln through a support frame 1001 10; the heating inner cylinder 1002 is provided with an independent working burner 1003; the rotary kiln 10 is provided with a preheating burner 1004 at the outer end of the heating inner cylinder 1002.

[0039] Preferably, the number of the heating inner cylinders 1002 is 3, arranged in a triangle.

[0040] A production process for purifying and whitening natural anhydrous gypsum, which includes the following steps:

[0041] a. Anhydrite enters the feed bin 1, and is sent to the primary crusher 3 through the feeder 2 for a primary crushing;

[0042] b. The anhydrite after primary crushing is lifted to the buffer bin 5 by the first hoist 4, and then enters the secondary crusher 6 for secon...

Embodiment 3

[0049] A calcining equipment for purifying and whitening natural anhydrous gypsum, which includes a rotary kiln 10, a plurality of heating inner cylinders 1002 are arranged in the middle of the rotary kiln 10; the heating inner cylinders 1002 are fixed in the rotary kiln through a support frame 1001 10; the heating inner cylinder 1002 is provided with an independent working burner 1003; the rotary kiln 10 is provided with a preheating burner 1004 at the outer end of the heating inner cylinder 1002.

[0050] Preferably, the number of the heating inner cylinders 1002 is 3, arranged in a triangle.

[0051] A production process for purifying and whitening natural anhydrous gypsum, which includes the following steps:

[0052] a. Anhydrite enters the feed bin 1, and is sent to the primary crusher 3 through the feeder 2 for a primary crushing;

[0053] b. The anhydrite after primary crushing is lifted to the buffer bin 5 by the first hoist 4, and then enters the secondary crusher 6 for secon...

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Abstract

The invention discloses calcination equipment for purifying and whitening natural anhydrous gypsum and a production technology of the calcination equipment. The calcination equipment comprises a rotary kiln, wherein a plurality of heating inner tubes are arranged at the middle of the rotary kiln; the heating inner tubes are fixed in the rotary kiln through supporting frames; independent operating burners are arranged on the heating inner tubes; preheating burners are arranged at the outer ends of the heating inner tubes of the rotary kiln. The invention aims at providing the calcination equipment for purifying and whitening natural anhydrous gypsum and a production technology of the calcination equipment, which can ensure that the whiteness of anhydrite reaches more than 98 percent through calcination for one time.

Description

Technical field [0001] The invention relates to a calcining equipment and production process for anhydrous gypsum, in particular to a calcining equipment and production process for purifying and whitening natural anhydrous gypsum. Background technique [0002] Natural anhydrous gypsum, also known as anhydrite, is an important industrial raw material. High-quality, high-Baidu anhydrite has a wide range of applications in building materials, coatings, rubber, and food. my country is rich in natural anhydrite resources, but due to its own nature and limitations of deep processing technology, the quality and whiteness of anhydrite processed by traditional techniques cannot meet the requirements of modern industrial applications, leading to the over-saturation of low-grade anhydrite products in the country, while the high-grade hard The relative shortage of gypsum products. Summary of the invention [0003] The purpose of the present invention is to solve the above problems and provid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F11/46
CPCC01F11/468C01P2006/60
Inventor 朱路遥
Owner 邵阳金拓科技开发有限公司
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