Manufacturing Process And Products Of Synthetic Gypsum Fertilizer With Decreased Dissolution or Solubility Profile
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United States of America Patent
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Jan 17, 2017
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Jan 15, 2016
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Abstract
A manufacturing process for producing pelletized synthetic gypsum with desirable durability and dissolution/solubility properties. Raw synthetic gypsum with about 8-12% of water by weight is mixed with a binder comprising at least one polysaccharide or biogum. In a first stage, the process produces pellets by compaction to form from a mixture of the raw synthetic gypsum and the binder. At that point, the pellets have 9-12% of water by weight. In a second stage and without adding water between the first stage and the second stage, the pellets are further compacted in a tumbler or spheronizor. Next, the pellets are dried to remove moisture from the pellets. The dried pellets include less than 1% water by weight.
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