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    • 1. 发明申请
    • METHOD AND APPARATUS FOR IMPROVING THE GRINDING RESULT OF A PRESSURE CHAMBER GRINDER
    • 改进压力室磨床研磨结果的方法和装置
    • WO1987003219A1
    • 1987-06-04
    • PCT/FI1986000130
    • 1986-11-20
    • OY FINNPULVA ABKEMIRA OYNIEMI, JoukoPYÖRIÄ, KaarloKORHONEN, Heikki
    • OY FINNPULVA ABKEMIRA OY
    • B02C19/06
    • B02C19/06
    • Method and apparatus for improving the grinding result of a pressure chamber grinder. Finely divided material is fed into a pressurized equalizing tank (2) by a mechanical feeder device (1). The fed material is then transferred into a pre-grinder (3) where the material is fluidized by grinding-gas jets. The fluidized material-gas flow is divided by a bisecting device (6) into two component flows and accelerated through two accelerating nozzles (8) directed towards the centre point of the main grinding chamber (9). The invention is characterized in that the outlet end of main grinding-chamber (9), via an acceleration tube (10), is connected to a free-flow grinder (11) provided with tangentially directed grinding-gas nozzles (12) and wherefrom the ready-ground final product is being removed constantly through a centrally located exhaust pipe (13).
    • 用于改善压力室研磨机研磨结果的方法和装置。 细分材料通过机械进料装置(1)进料到加压均化罐(2)中。 然后将进料的材料转移到预研磨机(3)中,其中材料通过研磨气体射流流化。 流化材料 - 气体流由二等分装置(6)分成两个组分流,并通过指向主研磨室(9)的中心点的两个加速喷嘴(8)加速。 本发明的特征在于,主研磨室(9)的出口端通过加速管(10)连接到设有切向定向研磨气体喷嘴(12)的自由流动研磨机(11),并且其中 现场最终产品通过位于中心的排气管(13)不断地被移除。
    • 2. 发明申请
    • PROCESS FOR THE PREPARATION OF MELAMINE
    • 制备MELAMINE的方法
    • WO1995001345A1
    • 1995-01-12
    • PCT/FI1994000307
    • 1994-07-01
    • KEMIRA OYTURUNEN, IlkkaOINAS, Pekka
    • KEMIRA OY
    • C07D251/60
    • C07D251/60
    • The invention relates to a process for the preparation of melamine from urea by feeding molten urea and hot ammonia gas into a reactor having a pressure within the range 50-150 bar and a temperature within the range 360-430 DEG C, whereby a reaction product is obtained which contains a liquid melamine melt and a gas mixture. This gas mixture is separated from the liquid melamine melt, and the liquid melamine melt thus obtained is directed to a vaporizer and is vaporized therein, and the melamine-containing gas obtained from the vaporizer is cooled in a quencher, in which case the melamine crystallizes in a very pure state, the purity being typically at minimum 99.9 %.
    • 本发明涉及一种从尿素制备三聚氰胺的方法,该方法是将熔融的尿素和热氨气送入压力在50-150巴的压力范围内,温度在360-430℃范围内的反应产物 得到含有液体三聚氰胺熔体和气体混合物。 将该气体混合物与液体三聚氰胺熔体分离,将由此获得的液体三聚氰胺熔体导向蒸发器并蒸发,并将从蒸发器获得的含三聚氰胺的气体在猝灭剂中冷却,在这种情况下,三聚氰胺结晶 在非常纯净的状态下,纯度通常在99.9%以下。
    • 3. 发明申请
    • PRESERVATIVE COMPOSITIONS FOR A PLANT MATERIAL
    • 植物材料的防腐组合物
    • WO1993016611A1
    • 1993-09-02
    • PCT/FI1993000068
    • 1993-02-26
    • KEMIRA OY
    • KEMIRA OYAHLNÄS, ThomasRAURAMAA, AinoLÖFGREN, Timo
    • A23L03/3508
    • A23L3/3508A23K30/15Y02A40/943
    • The invention relates to a liquid preservative composition which is suited for the preservation of green forage or the like and which contains as its active ingredient benzoic acid or its derivative. Benzoic acid or its derivative specifically promotes useful microbial activity in green forage. In the present invention their action is enhanced by adding to the composition propionic acid, which dissolves them, or a mixture of the same, together with formic acid and/or acetic acid. These acids also as such promote the said useful microbial activity. Other constituents which improve solubility and conventional agents promoting lactic acid fermentation can also be added to the composition.
    • 本发明涉及一种适用于保护绿色饲料等的含有苯甲酸或其衍生物作为活性成分的液体防腐剂组合物。 苯甲酸或其衍生物特别促进绿色饲料中有用的微生物活性。 在本发明中,通过向组合物中加入将它们溶解的丙酸或其混合物与甲酸和/或乙酸一起加入,来提高其作用。 这些酸也如此促进所述有用的微生物活性。 提高溶解性的其他成分和促进乳酸发酵的常规试剂也可以加入到组合物中。
    • 6. 发明申请
    • PROCESS FOR THE PREPARATION OF A SULFATE- AND HYDROXIDE-BASED FERRIC COMPOUND
    • 制备基于硫酸和氢氧化物的菲律化合物的方法
    • WO1995018069A1
    • 1995-07-06
    • PCT/FI1994000588
    • 1994-12-29
    • KEMIRA OYJÄFVERSTRÖM, StefanTUOMARLA, JuhaniKENAKKALA, Timo
    • KEMIRA OY
    • C01G49/14
    • C01G49/009C01G49/10C01G49/14C01P2006/80
    • The invention relates to a process for the preparation of a pure and solid, sulfate- and hydroxide-based ferric compound such as ferric hydroxysulfate or sodium jarosite, the process comprising the following procedures: a) a sulfate- and/or chloride-based ferric salt is prepared, b) an acidic aqueous solution is prepared which comprises either sulfate ions and ferric ions or sulfate, chloride and ferric ions, c) the acidic aqueous solution is maintained for 2-12 h at a temperature of 60-220 DEG C for the production of a solid, sulfate- and hydroxide-based ferric compound, such as ferric hydroxysulfate or sodium jarosite, by hydrolysis, and d) the pure and solid sulfate- and hydroxide-based ferric compound, such as ferric hydroxysulfate or sodium jarosite, is separated from the acidic aqueous solution. The processes for the preparation of ferric hydroxysulfate and sodium jarosite differ substantially only in that in the preparation of sodium jarosite an acid aqueous solution is prepared which, in addition to the either sulfate and ferric ions or sulfate, chloride and ferric ions, also contains a water-soluble sodium compound, in which case sodium jarosite is formed instead of ferric hydroxysulfate in the hydrolysis of point c) of the process.
    • 本发明涉及一种制备纯的和固体的基于硫酸盐和氢氧化物的三价铁化合物如羟基硫酸铁或钠黄钾铁矾的方法,该方法包括以下步骤:a)基于硫酸盐和/或氯化物的三价铁 制备盐,b)制备酸性水溶液,其包含硫酸根离子和三价铁离子或硫酸盐,氯化物和铁离子,c)酸性水溶液在60-220℃的温度下保持2-12小时 用于通过水解制备固体,基于硫酸盐和氢氧化物的三价铁化合物,例如氢氧化铁硫酸盐或钠黄钾铁矾,以及d)纯的和固体硫酸盐和氢氧化物的三价铁化合物,例如硫酸铁和氢氧化钠黄钾铁矾 与酸性水溶液分离。 用于制备羟基硫酸铁和钠黄钾铁矾的方法不同之处在于制备钠黄钾铁矾时,制备酸性水溶液,除了硫酸盐和铁离子或硫酸盐,氯化物和铁离子之外,还含有 水溶性钠化合物,在这种情况下,在步骤c)的水解中形成钠黄钾铁矾而不是硫酸铁。
    • 10. 发明申请
    • PROCESS FOR PRODUCING PAPER
    • 生产纸的方法
    • WO1993014263A1
    • 1993-07-22
    • PCT/FI1993000019
    • 1993-01-20
    • KEMIRA OYPETANDER, Lars, HaraldDUVNÄS, Tore, Anders, Johan
    • KEMIRA OY
    • D21H21/10
    • D21H21/10D21H17/375D21H17/455D21H17/55D21H17/56D21H17/66D21H23/14
    • The invention relates to a process for the production of paper by adding to an aqueous fiber suspension, which possibly contains a filler, auxiliary agents for improving retention and/or dewatering, the auxiliary agents being a cationic long-chain polyacrylamide and an aluminum salt, and by dewatering the obtained fiber suspension during the sheet-forming stage. According to the invention, the said aqueous fiber suspension, possibly containing a filler, to which the cationic long-chain polyacrylamide has first been added, is subjected to shearing forces, whereafter there is added to it, directly before sheet forming, a polymeric aluminum salt or an aluminum salt, in which case a base or an acid is added, when necessary, to the said fiber suspension so that the pH be within the range 7-9 before the sheet forming, in which case aluminum hydroxy particles having anionic surface charges will be formed in situ.
    • 本发明涉及通过添加可能含有填料的水性纤维悬浮液,用于改善保留和/或脱水的辅助剂,作为阳离子长链聚丙烯酰胺和铝盐的助剂来生产纸的方法, 并且在片材成型阶段中使所得到的纤维悬浮液脱水。 根据本发明,可以含有首先加入阳离子长链聚丙烯酰胺的填料的所述水性纤维悬浮液经受剪切力,然后直接在片材成型之前加入聚合物铝 盐或铝盐,在这种情况下,必要时加入碱或酸加入到所述纤维悬浮液中,使得pH在片材形成之前在7-9范围内,在这种情况下,具有阴离子表面的铝羟基颗粒 收费将在原地形成。