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Ammonium nitrates

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Calcium ammonium nitrate (CAN) is a nitrogenous fertilizer produced by treating ammonium nitrate solution with powdered limestone. It is a white to grey chalky powder, with the color depending on the limestone used in the manufacturing process. Made with dolomitic limestone, the fertilizer contains 20% nitrogen, 6 % calcium and 4 % magnesium. If the quantity of limestone is smaller than that of used ammonium nitrate, the nitrogen content can go up to 28 % CAN is preferred to ammonium nitrate in acid soils. The most common grade of CAN contains about 21% nitrogen, corresponding to 60% ammonium nitrate.<br/> Several methods are employed for manufacturing calcium ammonium nitrate. A concentrated ammonium nitrate solution is mixed with powdered limestone to obtain calcium ammonium nitrate granules. These are cooled, dried and coated with a suitable material.<br/> Other calcium compounds used for manufacturing CAN are ground calcite or dolomitic limestone, chalk, marl or precipitated calcium carbonate. The mixing is done quickly to avoid decomposition of ammonium nitrate. The granules contain 25 % nitrogen, half of which is in a nitrate form and the rest in an ammoniacal form. The fertilizer is water-soluble and useful to many crops and soils; the nitrogen available to plants is relatively resistant to leaching because of its ammoniacal form.<br/> Technologies of both prilling and granulation can be used for producing CAN. The prilled form is conditioned with china clay, kieselghur or calcined Fuller's earth in amounts ranging from 1 to 3% to improve the product characteristics during storage. To improve the product hardness, some manufacturers use pug mill to add ammonium sulphate equivalent to 0.3 to 0.5% of the sulphate (SO<sub>4</sub><sup>2-</sup>).<br/> Calcium ammonium nitrate is widely used as a fertilizer in Europe and the USA. It supplies nitrogen and calcium to all crops and soils. As CAN is not acidforming, it is good for acid soils. However, it is hygroscopic and difficult to handle because it absorbs moisture from the air and becomes sticky. Therefore, once a bag is opened, its content has to be used the same day.<br/> CAN is marketed under different trade names, like Ammonium nitrate limestone (ANL), Cal-nitro, Nitro-chalk, Nitrammoniacal, etc.

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  • Company Name:Hubei Ipure Biology Co., Ltd
  • Tel: +8613367258412
  • Products Intro:Product Name:Calcium Ammonium Nitrate
    Purity:0.99 Package:5KG;1KG
  • CB Index:58
  • Related Information:Catalog(10326)
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