Technique for producing ferrous sulfate monohydrate by push plate kiln

A ferrous sulfate and pusher kiln technology, applied in the direction of ferric sulfate, can solve the problems of unstable product quality, low recovery rate, and many equipments, and achieve the advantages of large-scale continuous production, simple operation, and no pollution to the environment Effect

Inactive Publication Date: 2008-03-26
乐昌市银星化工有限公司
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Problems solved by technology

Ferrous sulfate heptahydrate is a by-product in the production of titanium dioxide by the sulfuric acid method. At present, the methods for producing ferrous sulfate monohydrate in China generally include: one is to remove crystallization water, heat it to 80°C with steam, and stir in a reaction pot to remove crystallization water The second is centrifugal dehydration; the third is drying; the fourth is crushing and packaging. It has a long process, many equipments, and centrifugal dehydration is a strong waste acid. The pollution is serious, the recovery rate is low, the cost is high, and the product quality is unstable.

Method used

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Embodiment Construction

[0010] Below in conjunction with embodiment the present invention is further described.

[0011] A technology for producing ferrous sulfate monohydrate in a push plate kiln. 50 kg of ferrous sulfate heptahydrate after impurity removal treatment is put into an iron basin of 0.38×0.34×0.36, and 15 kg of waste water is added, and the material is fired into the cavity After low-temperature preheating, high-temperature roasting and low-temperature cooling respectively, the material pushing plate carries the material from one end, moves slowly, and finally pushes out from the other end, so that the drying, roasting, heat preservation, and cooling of the material are completed in sequence, and finally sulfuric acid monohydrate is obtained. Ferrous finished products are automated by pusher kiln, featuring three stages of preheating, high temperature, and cooling, with high thermal efficiency and energy saving. Due to one-time drying, there is no pollution to waste acid, and when chargi...

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Abstract

The present invention relates to technology of producing ferrous sulfate monohydrate in a push plate kiln. Depurated green vitriol as the material carried on the push plate is made to pass slowly through the roasting cavity inside the push plate kiln so as to be preheated, high temperature roasted and cooled successively to produce ferrous sulfate monohydrate. The present invention has the advantages of simple operation, reliable running, stable product quality, low power consumption, no environmental pollution, easy control and suitability for continuous industrial production.

Description

【Technical field】 [0001] The invention relates to a production technology of ferrous sulfate monohydrate, in particular to a technology for producing ferrous sulfate monohydrate by using a pusher kiln. 【Background technique】 [0002] Ferrous sulfate monohydrate is a non-toxic, odorless white powder substance. It is a feed grade mineral feed additive. It is used as a blood tonic for poultry and livestock. It can promote the growth and development of poultry, livestock and aquatic animals, and enhance disease resistance. Ability to increase feed remuneration. Iron also has a detoxification effect on the toxin-gossypol contained in the cottonseed cake in the feed. Ferrous sulfate monohydrate can also be used to make iron oxide red and other pigments. Granular products are very popular fertilizers abroad, which can effectively improve the soil, remove moss and lichens, and can also be used as pesticides to control wheat and fruit tree lesions. Ferrous sulfate heptahydrate is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/14
Inventor 朱文新
Owner 乐昌市银星化工有限公司
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