Granulation of urea products
    5.
    发明专利

    公开(公告)号:AU2016291068B2

    公开(公告)日:2019-11-28

    申请号:AU2016291068

    申请日:2016-07-06

    Applicant: STAMICARBON

    Abstract: Disclosed is a method of making a granulate of a urea product comprising urea and a salt, such as urea ammonium sulfate, having a high content of the salt. The high content is such as to provide an amount of the salt above the limit of solubility of the salt in urea. The granulate of the invention is characterized by having a smooth surface, which, e.g. in the event of urea ammonium sulfate, is not normally the case for granulate having the aforementioned high ammonium sulfate content. According to the invention this is realized by dividing the feed liquids to granulation. This division is based on non-final granulation liquids of a sufficiently high content of the salt, and a final granulation liquid (determining the surface) having a salt content of below the solubility limit of the salt, or no salt at all. E.g. in the event of urea ammonium sulfate, the non-final granulation liquids possibly are a slurry of urea and more than 20 wt.% of ammonium sulfate. The final granulation liquid then has 0-20 wt.% of ammonium sulfate, i.e. below the solubility limit.

    GRANULATION OF UREA PRODUCTS
    6.
    发明专利

    公开(公告)号:CA2991280A1

    公开(公告)日:2017-01-12

    申请号:CA2991280

    申请日:2016-07-06

    Applicant: STAMICARBON

    Abstract: Disclosed is a method of making a granulate of a urea product comprising urea and a salt, such as urea ammonium sulfate, having a high content of the salt. The high content is such as to provide an amount of the salt above the limit of solubility of the salt in urea. The granulate of the invention is characterized by having a smooth surface, which, e.g. in the event of urea ammonium sulfate, is not normally the case for granulate having the aforementioned high ammonium sulfate content. According to the invention this is realized by dividing the feed liquids to granulation. This division is based on non-final granulation liquids of a sufficiently high content of the salt, and a final granulation liquid (determining the surface) having a salt content of below the solubility limit of the salt, or no salt at all. E.g. in the event of urea ammonium sulfate, the non-final granulation liquids possibly are a slurry of urea and more than 20 wt.% of ammonium sulfate. The final granulation liquid then has 0-20 wt.% of ammonium sulfate, i.e. below the solubility limit.

    METHOD OF MAKING CONTROLLED RELEASE FERTILIZER PARTICLES

    公开(公告)号:CA2853300C

    公开(公告)日:2018-02-27

    申请号:CA2853300

    申请日:2012-10-24

    Applicant: STAMICARBON

    Abstract: The invention pertains to a method of making urea-containing particles wherein with a lower degree of cooling, high mechanical strengths are obtained. The method comprises the steps of (a) providing a first polymer 10 layer; (b) feeding urea droplets onto said first polymer layer, (c) cooling the droplets provided on the first polymer layer to a temperature between 55º C and 120º C; (d) applying a second polymer layer onto the first polymer layer comprising the droplets so as to form encapsulated urea droplets; and (e) separating the encapsulated urea droplets.

    Granulation of urea products
    8.
    发明专利

    公开(公告)号:AU2016291068A1

    公开(公告)日:2018-01-25

    申请号:AU2016291068

    申请日:2016-07-06

    Applicant: STAMICARBON

    Abstract: Disclosed is a method of making a granulate of a urea product comprising urea and a salt, such as urea ammonium sulfate, having a high content of the salt. The high content is such as to provide an amount of the salt above the limit of solubility of the salt in urea. The granulate of the invention is characterized by having a smooth surface, which, e.g. in the event of urea ammonium sulfate, is not normally the case for granulate having the aforementioned high ammonium sulfate content. According to the invention this is realized by dividing the feed liquids to granulation. This division is based on non-final granulation liquids of a sufficiently high content of the salt, and a final granulation liquid (determining the surface) having a salt content of below the solubility limit of the salt, or no salt at all. E.g. in the event of urea ammonium sulfate, the non-final granulation liquids possibly are a slurry of urea and more than 20 wt.% of ammonium sulfate. The final granulation liquid then has 0-20 wt.% of ammonium sulfate, i.e. below the solubility limit.

    КОМПОЗИЦИЯ ИЗ БИОМАССЫ ДЛЯ ПОКРЫТИЯ ЧАСТИЦ УДОБРЕНИЯ ИЛИ КОРМА ДЛЯ ЖИВОТНЫХ, СПОСОБ ЕЕ ПОЛУЧЕНИЯ, УДОБРЕНИЕ И КОРМ ДЛЯ ЖИВОТНЫХ

    公开(公告)号:EA020441B1

    公开(公告)日:2014-11-28

    申请号:EA201000986

    申请日:2008-12-12

    Applicant: STAMICARBON

    Abstract: Изобретениеотноситсяк композицииизбиомассы, используемойв качествепокрытиядлячастицудобренияиликормадляживотных, включающейв расчетенаобщуюсухуюмассукомпозицииа) 5-35 мас.% твердыхчастицбиомассы, произведенныхизрастений, призначениях Dменее 250 мкми Dменее 400 мкми b) 95-65 мас.% диспергатора, гдедиспергаторсодержитмасло, жириливоскилиихкомбинацию, приэтомкомпозицияизбиомассысодержитменее 30 мас.% влаги, измереннойпритемпературе 25°C и 50%-нойотносительнойвлажностивоздуха. Способполучениякомпозицииизбиомассывключаетстадиюдиспергированиятвердыхчастицбиомассыв диспергатореи размалываниепервоначальнойкомпозицииизбиомассыдодостижениятвердымичастицаминеобходимыхзначений. Удобрениеиликормдляживотныхмогутсодержатьчастицыс такимпокрытием.

    METHOD OF MAKING CONTROLLED RELEASE FERTILIZER PARTICLES

    公开(公告)号:CA2853300A1

    公开(公告)日:2013-05-02

    申请号:CA2853300

    申请日:2012-10-24

    Applicant: STAMICARBON

    Abstract: The invention pertains to a method of making urea-containing particles wherein with a lower degree of cooling, high mechanical strengths are obtained. The method comprises the steps of (a) providing a first polymer 10 layer; (b) feeding urea droplets onto said first polymer layer, (c) cooling the droplets provided on the first polymer layer to a temperature between 55º C and 120º C; (d) applying a second polymer layer onto the first polymer layer comprising the droplets so as to form encapsulated urea droplets; and (e) separating the encapsulated urea droplets.

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