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Method for improving quality of calcium hydroxide

A technology of calcium hydroxide and high quality, which is applied in the field of calcium hydroxide preparation, can solve the problems of reduced production of calcium hydroxide, reduced purity of calcium hydroxide finished products, uneven reaction temperature, etc., and achieves increased precipitation, improved purity, Uniform response and full effect

Pending Publication Date: 2022-06-21
衢州顺天钙业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional calcium hydroxide preparation process is usually in a bare outdoor environment. The outdoor environment temperature is low, and the temperature during preparation is easy to drop, which in turn leads to a decrease in the production of calcium hydroxide. At the same time, due to the heat generated during the reaction, the reaction Inhomogeneous temperature, which in turn leads to a reduction in the purity of the finished calcium hydroxide product

Method used

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  • Method for improving quality of calcium hydroxide

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Effect test

Embodiment 1

[0031] A method for improving the quality of calcium hydroxide, comprising: the steps are as follows:

[0032] S1: take the limestone with a mass fraction > 90% and pulverize, then add the pulverized limestone into a calciner for calcination, calcining to obtain quicklime, and vibrating the raw limestone and then performing pulverization to obtain quicklime powder;

[0033] S2: add cold water to the boiler for heating, and the heating temperature is 90°C to obtain hot water;

[0034] S3: Turn on the heating device to heat the interior of the lime digester, the heating temperature of the heating device is 85°C, and the temperature inside the lime digester is monitored by a temperature sensor;

[0035] S4: Add the quicklime powder to the lime digester, and then feed the heated water. The mass ratio of the quicklime powder to the water is 1:0.5. Start the lime digester, and the hot water reacts with the quicklime, and the hot water reacts with the quicklime. The reaction time is...

Embodiment 2

[0042] A method for improving the quality of calcium hydroxide, comprising: the steps are as follows:

[0043] S1: take the limestone with a mass fraction > 90% and pulverize, then add the pulverized limestone into a calciner for calcination, calcining to obtain quicklime, and vibrating the raw limestone and then performing pulverization to obtain quicklime powder;

[0044] S2: add cold water to the boiler for heating, and the heating temperature is 98°C to obtain hot water;

[0045] S3: Turn on the heating device to heat the interior of the lime digester, the heating temperature of the heating device is 95°C, and the temperature inside the lime digester is monitored by a temperature sensor;

[0046] S4: Add the quicklime powder to the lime digester, and then feed the heated water. The mass ratio of the quicklime powder to the water is 1:0.8. Start the lime digester, and the hot water reacts with the quicklime, and the hot water reacts with the quicklime. The reaction time is...

Embodiment 3

[0053] A method for improving the quality of calcium hydroxide, comprising: the steps are as follows:

[0054] S1: take the limestone with a mass fraction > 90% and pulverize, then add the pulverized limestone into a calciner for calcination, calcining to obtain quicklime, and vibrating the raw limestone and then performing pulverization to obtain quicklime powder;

[0055] S2: add cold water to the boiler for heating, and the heating temperature is 97°C to obtain hot water;

[0056] S3: Turn on the heating device to heat the interior of the lime digester, the heating temperature of the heating device is 92°C, and the temperature inside the lime digester is monitored by a temperature sensor;

[0057] S4: Add the quicklime powder to the lime digester, and then feed the heated water. The mass ratio of the quicklime powder to the water is 1:0.8. Start the lime digester, and the hot water reacts with the quicklime, and the hot water reacts with the quicklime. The reaction time is...

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Abstract

The invention discloses a calcium hydroxide quality improving method, which belongs to the technical field of calcium hydroxide preparation and comprises nine steps. According to the lime slaking machine, the interior of the lime slaking machine can be monitored through the temperature sensor, when the temperature in the lime slaking machine is lower than a preset value, the lime slaking machine is heated through the heating device, meanwhile, reaction water is heated, and the temperature in the calcium oxide slaking process can be increased; the problems that in the traditional calcium hydrogen hydride preparation process, an exposed outdoor environment is usually adopted, the temperature of the outdoor environment is low, the temperature during preparation is prone to being reduced, then the preparation yield of calcium hydroxide is reduced, meanwhile, due to the fact that heat is generated in the reaction process, the reaction temperature is not uniform, and then the purity of a calcium hydroxide finished product is reduced are solved. Further, the reaction temperature is effectively increased, the precipitation amount of calcium hydroxide is increased, the yield is increased, and meanwhile, the purity of calcium hydroxide is improved.

Description

technical field [0001] The invention relates to the technical field of calcium hydroxide preparation, in particular to a method for improving the quality of calcium hydroxide. Background technique [0002] Calcium hydroxide is an inorganic compound with the chemical formula Ca(OH) 2 , commonly known as slaked lime or slaked lime. It is a white powdery solid. After adding water, it is divided into upper and lower layers. The upper aqueous solution is called clarified lime water, and the lower suspension is called lime milk or lime slurry. The supernatant clear lime water can test carbon dioxide, and the lower turbid liquid lime milk is a building material. Calcium hydroxide is a strong alkali, which has bactericidal and antiseptic properties, and has a corrosive effect on skin and fabrics. Calcium hydroxide is widely used in industry. It is a commonly used building material, and is also used as a fungicide and chemical raw materials. [0003] The general industrial prepa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B2/04C04B2/08C04B2/10
CPCC04B2/04C04B2/08C04B2/10
Inventor 童斌
Owner 衢州顺天钙业有限公司