Shell powder and preparation method thereof

A shell powder, shell technology, applied in the direction of calcium carbonate/strontium/barium, calcium/strontium/barium oxide/hydroxide, etc., can solve the problems of high reaction temperature, complicated process, numerous preparation equipment, etc., and reduce roasting. The effect of temperature, simple preparation process and wide application prospect

Inactive Publication Date: 2012-01-11
BEHAN NEW ENVIRONMENTALLY FRIENDLY CONSTR MATERIALS CO LTD JILIN PROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages of this method are: shell roasting temperature is high, energy consumption is high, and pollution is relatively large
The main disadvantages of this method are: (1) shells are roasted twice at two temperatures, the reaction temperature is high, the time is long, energy consumption is high, and pollution is relatively large; (2) twice roasting, the process is complicated, the cost is high, and it is not suitable for industrial Production
The main disadvantage of this method is that the preparation equipment is various and the process is complicated.

Method used

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  • Shell powder and preparation method thereof
  • Shell powder and preparation method thereof
  • Shell powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The shell powder is prepared from clam Meretrix meretrix and its preparation method.

[0028] 1. Wash the clam (Petera meretrix) with water, dry or dry it naturally, use a multifunctional pulverizer to preliminarily pulverize the powder of the clam (Peteria meretrix) and then pass through a sieve to reach a value of φ<1.7mm.

[0029] 2. Add a small amount of additives according to the ratio set in the experiment.

[0030] When the mass ratio of clams (Clams carbai) and additives is 15:1 and roasted at 600° C. for 30 minutes, the obtained clams (Clams carbai) powder is gray (No. 01 in Table 1).

[0031] When the mass ratio of Meretrix meretrix (Chebai) to additives is 20:1 and roasted at 800°C for 60 minutes, the obtained clam (Chebai) powder is white with a specific surface of 2.5m 2 / g (see Table 1 No. 03).

[0032] If no additives are added, the mass ratio of clams (Carbai) to additives is 20:0, and roasted at 800°C for 60 minutes, the obtained clam (Carbai) powder ...

Embodiment 2

[0040] The shell powder is prepared from Philippine clams (commonly known as clams in the south, clams in Liaoning and clams in Shandong) and its preparation method.

[0041] 1. Take Philippine clams, wash them with water, dry them or dry them naturally, and use a multifunctional pulverizer to sieve the powder of Philippine clams to reach φ<1.7mm.

[0042] 2. Add a small amount of additives according to the ratio set in the experiment.

[0043] When the mass ratio of Philippine clams and additives is 15:1 and roasted at 600°C for 30 minutes, the obtained Philippine clam powder is gray (No. 02 in Table 1).

[0044] When the mass ratio of Philippine clams and additives is 20:1, and roasted at 800°C for 60 minutes, the obtained Philippine clam powder is white, with a specific surface of 3.5m 2 / g (see Table 1 No. 04).

[0045] If no additives are added, the mass ratio of Philippine clams to additives is 20:0, and roasted at 800°C for 60 minutes, the obtained Philippine clam pow...

Embodiment 3

[0050] Shell powder prepared from snail shells and a preparation method thereof.

[0051] 1. Take the snail shell, wash it with water, dry it or dry it naturally, use a multi-functional pulverizer to preliminarily crush the snail shell powder, and then pass it through a sieve to reach φ<1.7mm.

[0052] 2. Add a small amount of additives according to the ratio set in the experiment.

[0053] When the mass ratio of snail shells and additives is 20:1, and roasted at 800°C for 30 minutes, the obtained snail shell powder is light gray (No. 10 in Table 1).

[0054] When the mass ratio of snail shells to additives is 20:1 and roasted at 800°C for 60 minutes, the obtained snail shell powder is white with a specific surface of 3.2m 2 / g (see Table 1 No. 09).

[0055] This example proves that the optimal conditions for forming snail shell powder are: the mass ratio of snail shell powder to additives is 20:1, the roasting temperature is 800° C., and the roasting time is 60 minutes.

...

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Abstract

The invention relates to shell powder and a preparation method thereof. The invention provides the high-quality shell powder and solves the technical problems of reducing the baking temperature, shortening time and reducing energy consumption. The preparation method of theshell powder comprises the following steps of: washing ruditapes philippin (known as ruditapes philippinarum in the southern part of China, clam in Liaoning province, China, and surf clam in Shandong province, China), clams, oysters, scallop and conchs, drying, pulverizing, adding an auxiliary agent, mixing, baking, grinding, and sifting to prepare powder; determining that the powder has the main component of CaCO3 and a small amount of CaO by using an infrared spectrograph, a powder X-ray spectrograph and a specific surface measurement device; placing in the air; and then converting CaO to [Ca(OH)2]. The shell powder belongs to calcite type crystal, can be used as a natural material and for replacing a chemical product and has broad application prospect.

Description

technical field [0001] The invention relates to a shell powder and a preparation method thereof. Background technique [0002] my country is in a period of rapid economic development, and the rapid development of the seafood farming industry has greatly enriched people's food culture. At the same time, it has caused piles of shellfish garbage, rotting and smelly, causing serious air pollution. Dispose of shellfish waste well, turn waste into treasure, and benefit mankind. [0003] A few days ago, there have been many patent reports related to shell powder. The lack of high-quality shell powder products independently developed by my country is mainly due to the lack of breakthroughs in the technology and process of preparing shell powder. [0004] Japanese Patent Laid-Open No. 145693 of 2001 proposes a material in which crushed scallop (scallop) shells are fired into calcium oxide at a high temperature of 1000° C. or higher. The main disadvantages of this method are: shell ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F11/18C01F11/02
Inventor 梁有张大为阎雁陈林余坚佟珊玲郝志峰阎瀚
Owner BEHAN NEW ENVIRONMENTALLY FRIENDLY CONSTR MATERIALS CO LTD JILIN PROVINCE
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