METHODS AND COMPOSITIONS FOR RECYCLING ASPHALT PAVEMENT
    2.
    发明申请
    METHODS AND COMPOSITIONS FOR RECYCLING ASPHALT PAVEMENT 审中-公开
    回收沥青铺路的方法和组合

    公开(公告)号:WO1996023932A1

    公开(公告)日:1996-08-08

    申请号:PCT/US1996000021

    申请日:1996-01-17

    CPC classification number: E01C7/26 E01C7/187 E01C19/1004 E01C23/065

    Abstract: A high solids lime slurry is prepared by either slaking quicklime or by slurrying dry, hydrated lime. The high solids lime slurry is mixed (15) with crushed aggregate (13) which has been collected by scraping (11) the top surface of an old roadway. The treated aggregate is deposited (17) onto the old roadway and compacted (19) to form a new roadway.

    Abstract translation: 通过切碎生石灰或通过将干燥的熟石灰制浆而制备高固含量的石灰浆料。 将高固体石灰浆料与已经通过刮削(11)旧道路顶表面收集的粉碎骨料(13)混合(15)。 经处理的骨料沉积(17)到旧道路上并压实(19)以形成新的道路。

    TREATMENT OF HIGH SULFATE CONTAINING QUICKLIME
    3.
    发明申请
    TREATMENT OF HIGH SULFATE CONTAINING QUICKLIME 审中-公开
    高硫酸盐处理快速检测

    公开(公告)号:WO2007021646A2

    公开(公告)日:2007-02-22

    申请号:PCT/US2006/030740

    申请日:2006-08-04

    Inventor: HUEGE, Fred, R.

    Abstract: A method is shown for controlling the presence of soluble sulfate ions in a lime slaking operation in which a source of quicklime is combined with slaking water to form calcium hydroxide product. A complexing agent is added to either the quicklime or the slaking water which is effective to tie up the soluble sulfate ions otherwise available in solution, whereby the agglomeration of calcium hydroxide product is acceptably controlled.

    Abstract translation: 显示了在石灰消解操作中控制可溶性硫酸根离子的存在的方法,其中生石灰源与消化水结合以形成氢氧化钙产物。 向生石灰或去污水中加入络合剂,这有效地结合溶液中可用的可溶性硫酸根离子,从而可以可靠地控制氢氧化钙产物的附聚。

    HOT MIX ASPHALT AND METHOD OF PREPARATION THEREOF
    4.
    发明申请
    HOT MIX ASPHALT AND METHOD OF PREPARATION THEREOF 审中-公开
    热混合沥青及其制备方法

    公开(公告)号:WO1996013550A1

    公开(公告)日:1996-05-09

    申请号:PCT/US1995012697

    申请日:1995-10-12

    CPC classification number: E01C7/187 E01C7/26 E01C19/1004 E01C23/065

    Abstract: A method of treating aggregate for use in hot mix asphalt compositions to promote adhesion between the aggregate material and bituminous binder by mixing together in a mixing tank (12) unslaked quicklime and an aqueous slaking medium to form a quicklime slurry and pumping the slurry through a conduit (70) to be mixed with aggregate from a feed bin (75) at a pugmill (74) of a hot asphalt plant.

    Abstract translation: 一种处理用于热混沥青组合物中的骨料的方法,以通过在未沉淀的生石灰的混合罐(12)和水性消化介质中混合在一起以促进骨料和沥青粘合剂之间的粘附,以形成生石灰浆料并将浆料泵送通过 导管(70)与来自热沥青设备的搅拌机(74)的进料仓(75)与骨料混合。

    METHOD OF PRODUCING FOOD GRADE HYDRATED LIME
    5.
    发明申请
    METHOD OF PRODUCING FOOD GRADE HYDRATED LIME 审中-公开
    生产食品级水合石灰的方法

    公开(公告)号:WO2004086876A2

    公开(公告)日:2004-10-14

    申请号:PCT/US2004/008821

    申请日:2004-03-23

    Inventor: HUEGE, Fred, R.

    IPC: A23L

    CPC classification number: C04B2/04

    Abstract: A method is shown for producing food grade hydrated lime. A source of raw, hydrated lime is first passed through a classification step which divides the raw hydrated lime into a first fine stream and a first coarse stream. The first coarse stream is then passed to a grinder which produces a ground coarse product. The first fine stream is separated out from the first coarse stream and, without combining the first fine stream with the first coarse stream or with the ground coarse product, is removed to produce a very fine sized product which meets CODEX chemical specifications.

    Abstract translation: 示出了用于生产食品级熟石灰的方法。 原始熟石灰的来源首先通过分级步骤,该分级步骤将原始熟石灰分成第一细流和第一粗流。 然后将第一粗粒物流传送到研磨机,该研磨机产生磨碎的粗产品。 将第一细物流从第一粗物流中分离出来,并且不将第一细物流与第一粗物流或磨碎的粗物质混合,将其除去以产生符合CODEX化学规格的非常精细尺寸的产物。

    METHOD OF PREVENTING CORROSION IN CONCRETE PIPE
    6.
    发明申请
    METHOD OF PREVENTING CORROSION IN CONCRETE PIPE 审中-公开
    防止混凝土管腐蚀的方法

    公开(公告)号:WO1997025160A1

    公开(公告)日:1997-07-17

    申请号:PCT/US1997000001

    申请日:1997-01-03

    Abstract: A method of treating concrete pipe (10) is carried out by providing an aqueous lime slurry supply having a lime solids content above 35 % by weight of the slurry. This is mixed within an amount of dispersing agent and may contain an alkali metal hydroxide so that the slurry has a pumpable viscosity. A spray assembly (28) is located within the interior of the pipe. The lime slurry is pumped from this lime slurry supply through the spray assembly (28) so that the lime slurry is applied to the interior surface of the pipe to neutralize acids thereon. Applying the lime spray also provides a protective coating of the lime slurry on the interior surfaces of the pipe.

    Abstract translation: 一种处理混凝土管道(10)的方法是通过提供石灰固体含量高于浆料重量的35%的水性石灰浆料供应来进行的。 这在一定量的分散剂中混合,并且可以含有碱金属氢氧化物,使得浆料具有可泵送的粘度。 喷雾组件(28)位于管道内部。 将石灰浆料从该石灰浆料供应源泵送通过喷雾组件(28),使得石灰浆料施加到管的内表面以中和其上的酸。 施加石灰喷雾还在管的内表面上提供石灰浆的保护涂层。

    METHOD OF MANUFACTURING HIGH PURITY CALCIUM CARBONATE
    7.
    发明申请
    METHOD OF MANUFACTURING HIGH PURITY CALCIUM CARBONATE 审中-公开
    制造高纯度碳酸钙的方法

    公开(公告)号:WO1997011030A1

    公开(公告)日:1997-03-27

    申请号:PCT/US1996000722

    申请日:1996-01-30

    Abstract: Flue gases exhausted from a lime kiln (10) containing lime kiln dust are treated to produce a high purity calcium carbonate precipitate. This is accomplished by passing the flue gases from the lime kiln (10) through a kiln dust separator (12) so that lime kiln dust containing calcium oxide is removed from the remaining flue gas (15). The lime kiln dust is mixed with water so that an aqueous suspension of the lime kiln dust is formed. Quicklime or calcium oxide in the lime kiln dust is thus hydrated to form calcium hydroxide. The solids within the suspension are then allowed to settle in settling tank (14) so that a clear, saturated solution of calcium hydroxide having a pH of about 12.4 is formed. This solution is then contacted with carbon dioxide gas in reaction tank (16) so that the calcium hydroxide reacts to form a high purity calcium carbonate precipitate. This high purity calcium carbonate precipitate is then allowed to settle from supernatant water of the solution in thickener tank (20). The high purity calcium carbonate is separated from the supernatant water, while the supernatant water is recycled through conduit (24) and used as the water mixed with the lime kiln dust to form the aqueous suspension.

    Abstract translation: 从含石灰窑灰的石灰窑(10)中排出的烟气被处理以产生高纯度碳酸钙沉淀物。 这是通过将来自石灰窑(10)的烟道气通过窑灰分离器(12)使得从剩余的烟道气(15)中除去含有氧化钙的石灰窑灰尘来实现的。 将石灰窑灰与水混合,形成石灰窑灰的水悬浮液。 因此石灰窑灰中的生石灰或氧化钙水合形成氢氧化钙。 然后使悬浮液中的固体沉降在沉淀槽(14)中,以形成pH为约12.4的透明饱和氢氧化钙溶液。 然后将该溶液与反应罐(16)中的二氧化碳气体接触,使得氢氧化钙反应形成高纯度碳酸钙沉淀物。 然后将这种高纯度碳酸钙沉淀物从浓缩罐(20)中溶液的上清液中沉淀出来。 将高纯度碳酸钙与上清水分离,同时将上清液通过导管(24)再循环,并用作与石灰窑灰混合的水形成水悬浮液。

    HIGH SOLIDS LIME AS A CAUSTIC REPLACEMENT
    8.
    发明申请
    HIGH SOLIDS LIME AS A CAUSTIC REPLACEMENT 审中-公开
    高固体物质作为主要替代物

    公开(公告)号:WO1997007882A1

    公开(公告)日:1997-03-06

    申请号:PCT/US1996013476

    申请日:1996-08-23

    CPC classification number: C02F1/54 C02F1/5236

    Abstract: A composition for a pumpable lime slurry which is adapted for use as a replacement for caustic solutions is formed by combining a dispersing agent in lime and water to form an aqueous slurry. The amount of lime used is between 35 to 55 % by weight of the slurry. The dispersing agent, which is an anionic polyelectrolyte, such as polyacrylic, polycarboxylic acids and alkali metal salts thereof, is added in an amount between 0.1 to 3 % by weight of the lime. To this is added an alkali metal hydroxide of 0.1 to 1.5 % by weight of lime. The order of addition of the alkali metal hydroxide is important. The later addition of the alkali metal hydroxide results in a decreased viscosity so that a lower amount of dispersing agent is required.

    Abstract translation: 通过将石灰和水中的分散剂组合以形成水性浆料,形成适用于替代苛性碱溶液的可泵送石灰浆料的组合物。 所使用的石灰的量为浆料的35至55重量%。 作为阴离子聚电解质的分散剂,例如聚丙烯酸,多元羧酸及其碱金属盐,其添加量为石灰重量的0.1〜3%。 向其中加入0.1至1.5重量%的石灰的碱金属氢氧化物。 加入碱金属氢氧化物的顺序是重要的。 碱金属氢氧化物的后续添加导致粘度降低,从而需要较低量的分散剂。

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