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Dengta Huatao Mining Co., Ltd.

Contact: Manager Zhang

Mobile: 13941993697

Contact: Manager Zhu

Mobile: 13841904588

Website: www.dthtky.com

Website: en.dthtky.cn

Address: Shanggangyao Village, Xidayao Town, Dengta City, Liaoning Province


On the Environmental Protection of Active Lime

2019-12-20
Times

In actual production, in order to accelerate the decomposition, the calcination temperature of the active lime is often increased to 1000-1100 ° C. Due to the large size of the active lime raw material or uneven temperature distribution in the kiln during calcination, lime often contains under-fired lime and over-fired lime. The calcium carbonate in underfired lime does not completely decompose and lacks cohesion when used. The structure of overfired lime is dense, and the surface is often coated with a layer of molten material, which is slow to mature. Because raw materials often contain magnesium carbonate (MgCO3), quick lime also contains the minor component magnesium oxide (MgO). According to the amount of magnesium oxide, quick lime is divided into calcareous lime (MgO≤5%) and magnesia lime (MgO > 5%). Lime is divided into quicklime and slaked lime. The main component of quicklime is calcium oxide (CaO), a white solid refractory. Limestone with a high (CaO) content is obtained by calcining it in a ventilated lime kiln to a temperature above 900 ° C. It is water-absorbent and can be used as a desiccant. It is commonly used in China to prevent debris from regaining moisture. It reacts with water (releasing a large amount of heat at the same time), or absorbs moisture formed in humid air, namely mature lime [Ca (OH) 2], also known as "slaked lime". Slaked lime dissolves 1.56 g (20 ° C) in one liter of water. Its drink and solution is called "lime water", which is alkaline and absorbs carbon dioxide in the air to form calcium carbonate precipitates. Active lime

Special lime for water purification

I. Product Name: Nitralime

II.Specifications: powder

III. Product Overvie

1. Alias: ash for sewage treatment, calcium hydroxide

2 、 Molecular formula: Ca (OH) 2

 


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