Pulp Mills (Virgin)Pulp Mills make pulp, a mixture of cellulose fibers translation - Pulp Mills (Virgin)Pulp Mills make pulp, a mixture of cellulose fibers Chinese how to say

Pulp Mills (Virgin)Pulp Mills make

Pulp Mills (Virgin)Pulp Mills make pulp, a mixture of cellulose fibers and water used as the basis of all paper products. Pulp is made in several ways, depending on the type of paper being produced. Wood chips, which come from logs or from residues from sawmills, furniture manufacturers and other sources, can be chemically or mechanically separated into individual wood fibers in a process called pulping.In chemical pulping, the most common pulping process in the United States, wood chips are “cooked??? in a digester at an elevated pressure with an appropriate solution of chemicals to dissolve the lignin (the “glue??? that binds the fibers in the wood) and allow the cellulose fiber bundles in the wood to separate into individual cellulose fibers. Since chemical processing is gentle on the cellulose fiber, chemical pulps tend to have longer fibers and make strong paper such as printing and writing papers and paperboard.In mechanical pulping, chemicals are not used to remove the lignin in the wood chips. Instead,wood chips are pressed against a grinder that physically separates the fibers. Mechanical pulps have shorter fiber lengths and produce papers which do not require as much strength, such as newsprint. After the fibers have been separated, the mill washes and decontaminates the pulp. To produce a white paper product, the mill must bleach the pulp to remove color associated with remaining residual lignin. Typically, the bleaching chemicals (such as chlorine dioxide, oxygen, or hydrogen peroxide) are injected into the pulp and the resulting mixture is washed with water.The bleached or unbleached wood pulp, which at this point is very dilute slurry, is pumped out of a headbox onto a wire screen felt that allows water to drain out of the pulp and help the fibers interlock into a sheet. By varying the amount of pulp pumped onto the wire, the speed of the wire different qualities and properties of paper can be achieved. The continuous sheet then pass through a long series of rollers that press out any remaining moisture, followed by steam-heated drums that dry the paper. Finally, a process called calendaring polishes the sheets and smoothes out wrinkles. The continuous sheet of paper is wound onto jumbo rolls and then cut to a variety of paper widths.Recycled Paper Processing MillsRecycled paper processing mills use paper as their feedstock. The recovered paper is combined with water in a large vessel called a pulper that acts like a blender to separate fibers in the paper sheets from each other. The resultant slurry then passes through screens and other separation processes to remove contaminants such as ink, clays, dirt, plastic and metals. The amount of contaminants that are acceptable in the pulp depend upon the type of paper being produced. Mechanical separation equipment includes coarse and fine screens, centrifugal cleaners, and dispersion or kneading units that break apart ink particles. De-inking processes use special systems aided by soaps or surfactants to wash or float ink and other particles away from the fiber.Recovered fiber can be used to produce new paper products made entirely of recovered fiber (i.e. 100 percent recycled content) or from a blend of recovered and virgin fiber. Fiber cannot, however, be recycled endlessly. It is generally accepted that a fiber can be used five to seven times before it becomes too short (as a result of repulping and other handling) to be useable in new paper products. Recovered paper with long cellulose fibers (such as office paper) has the greatest flexibility for recycling as it can be used to produce new paper products that use either long or short fibers. Recovered paper with short cellulose fibers (such as newspaper) can only be recycled into other products that use short cellulose fibers. For this reason, recovered paper with long fibers is generally of higher value than recovered paper with short fiber.
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纸浆厂(原生)<br><br>的纸浆厂纸浆制作,用作所有纸产品的基础纤维素纤维和水的混合物。纸浆以几种方式做出,这取决于纸正在生产的类型。木屑,其中来自记录或从来自锯木厂,家具制造商和其他来源的残基,可以在称为制浆过程中化学或机械分离成单独的木纤维。<br><br>在化学制浆,在美国最常见的制浆工艺,木片“熟??? 在升高的压力下用化学物质溶解木质素(结合纤维在木材中的“胶水???),并允许在木材中的纤维素纤维束分成单独的纤维素纤维的一个合适的溶液中的蒸煮器。由于化学处理的纤维素纤维的温柔,化学浆往往有较长的纤维与强力纸,如印刷纸和书写纸和纸板。<br><br>在机械制浆,化学品不用于除去木质素的木片。相反,木屑压在物理分离纤维粉碎机。机械纸浆具有较短的纤维长度和产生文件不需要尽可能多的强度,如新闻纸。纤维被分离后,磨洗和在去污纸浆。以生成白色纸产品,工厂必须漂白纸浆与剩余的残留木素相关联的除去颜色。通常,漂白化学品(例如二氧化氯,氧或过氧化氢)被注入到纸浆和洗涤所得到的混合物与水。<br><br>的漂白或未漂白的木浆,其在这一点上是非常稀的浆料,由流浆箱的泵出到丝网毛毡允许水浆和帮助将纤维互锁成片材的排出。通过改变纸浆泵入金属丝的量,可以实现电线不同质量和纸张性能的速度。连续片材,然后穿过一个长一系列辊即压出任何残留的水分,接着由干燥纸蒸汽加热鼓。最后,这个过程被称为压延抛光的薄片和抚平皱纹。纸的连续片材被卷绕到大卷,然后切割成各种纸张的宽度。<br><br>回收纸加工厂<br><br>回收纸加工厂使用纸作为其原料。将回收的纸在大容器中与水结合称为行为像搅拌器,以彼此的纸张分离纤维的碎浆机。然后将所得淤浆通过屏幕和其他分离过程通过以除去污染物诸如墨,粘土,泥土,塑料和金属。的是,在纸浆是可接受的污染物的量取决于纸正在生产的类型。机械分离设备包括粗和细筛,离心净化器,而且掰开油墨颗粒的分散体或捏合单元。脱墨工艺使用通过肥皂或表面活性剂洗涤或漂浮墨水和其它颗粒从纤维远资助特殊系统。<br><br>回收的纤维可用于生产新纸产品完全由再生纤维(即,100%的回用的内容)或从回收和原生纤维的共混物。纤维不能,然而,无休止地循环使用。人们普遍接受的是,一纤维可用于五至七倍它变得太短(如再浆化和其它处理的结果),以在新的纸制品可用之前。与长的纤维素纤维(如办公用纸)回收纸具有用于循环,因为它可以用于产生或者使用长或短纤维新纸产品的最大的灵活性。具有短的纤维素纤维(如报纸)回收纸只能被再循环到使用短纤维素纤维等产品。出于这个原因,回收纸,长纤维是通常的比用短纤维回收纸更高的值。
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纸浆厂(维尔京)<br><br>纸浆厂制造纸浆,纤维素纤维和水的混合物用作所有纸制品的基础。纸浆的制作方式有多种,具体取决于所生产的纸张类型。木材芯片来自原木或来自锯木厂、家具制造商和其他来源的残留物,在称为制浆过程中,可以化学或机械地分离成单独的木纤维。<br><br>在化学制浆中,最常见的制浆工艺是美国最常见的木屑是"煮熟的???在高压的沼气池中,用适当的化学溶液溶解木质素("胶水???将纤维结合在木材中),并允许木材中的纤维素纤维束分离成单独的纤维素纤维。由于化学加工对纤维素纤维比较温和,化学纸浆往往具有较长的纤维,并制造强纸,如印刷和书写纸和纸板。<br><br>在机械制浆中,化学品不用于去除木屑中的木质素。相反,木屑被压在将纤维物理分离的研磨机上。机械纸浆的纤维长度较短,生产不需要强度的纸张,如新闻纸。纤维分离后,轧机对纸浆进行清理和净化。要生产白纸产品,磨机必须漂白纸浆以去除与残留木质素相关的颜色。通常,漂白化学品(如二氧化氯、氧气或过氧化氢)被注入纸浆中,所得的混合物用水洗涤。<br><br>漂白或未漂白的木浆,此时是非常稀的浆料,从头盒泵出到丝网毡,让水排出纸浆,并帮助纤维联锁成一片。通过改变泵送到导线上的纸浆量,可以达到导线的速度,达到纸张的不同品质和特性。连续的纸张然后通过一长串的滚筒,压出任何剩余的水分,然后是蒸汽加热的桶,干燥纸张。最后,一个叫做日历的过程可以擦亮床单,消除皱纹。连续的纸张被缠绕在巨型纸卷上,然后切到各种纸张宽度上。<br><br>再生纸加工厂<br><br>再生纸加工厂使用纸张作为原料。回收的纸张与称为脉冲器的大型容器中的水结合,该容器的作用类似于搅拌机,将纸张中的纤维彼此分离。由此产生的浆料然后通过筛分和其他分离工艺,去除油墨、粘土、污垢、塑料和金属等污染物。纸浆中可接受的污染物量取决于所生产的纸张类型。机械分离设备包括粗屏和细屏、离心清洁剂以及分解油墨颗粒的分散或捏合装置。去墨工艺使用特殊的系统,由肥皂或表面活性剂辅助,以洗涤或浮动油墨和其他颗粒远离纤维。<br><br>回收的纤维可用于生产完全由回收纤维(即 100% 回收含量)或回收纤维和初榨纤维混合制成的新纸产品。然而,纤维不能无休止地循环利用。人们普遍认为,一种纤维在变得太短(由于重新装货和其他处理)之前可以使用五到七次,无法用于新的纸制品。再生用长纤维素纤维(如办公用纸)的回收纸具有最大的回收灵活性,因为它可用于生产使用长纤维或短纤维的新纸产品。使用短纤维素纤维(如报纸)的回收纸只能回收到使用短纤维素纤维的其他产品中。因此,长纤维回收纸的价值一般高于短纤维回收纸。
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纸浆厂(原始)<br>纸浆厂制造纸浆,一种纤维素纤维和水的混合物,用作所有纸制品的基础。纸浆有几种制造方法,取决于所生产纸张的类型。木屑来自原木或来自锯木厂、家具制造商和其他来源的残渣,可以通过化学或机械方法分离成单独的木纤维,这一过程称为制浆。<br>在化学制浆,最常见的制浆过程在美国,木片是“煮熟”??? 在高压蒸煮器中加入适当的化学溶液溶解木质素(“胶水”??? 将木材中的纤维结合在一起)并使木材中的纤维素纤维束分离成单独的纤维素纤维。由于化学处理对纤维素纤维的影响较小,化学浆的纤维长度往往较长,并能制得结实的纸张,如印刷纸、书写纸和纸板。<br>在机械制浆中,化学物质不用于去除木屑中的木质素。取而代之的是,木屑被压在研磨机上,研磨机将纤维物理分离。机械浆的纤维长度较短,生产的纸张不需要太多的强度,如新闻纸。纤维分离后,磨坊对纸浆进行洗涤和去污。要生产白纸产品,造纸厂必须对纸浆进行漂白,以去除与剩余木质素有关的颜色。通常,漂白化学品(如二氧化氯、氧气或过氧化氢)被注入纸浆,所得混合物用水洗涤。<br>漂白或未漂白的木浆,此时是非常稀的浆,从流浆箱中泵出到丝网毡上,使水从浆中排出,并帮助纤维联锁成一张纸。通过改变纸浆的泵送量,可以获得不同质量和性能的纸张。接着,连续的纸张经过一长串压辊,压出任何残留的水分,接着是蒸汽加热的滚筒,使纸张干燥。最后,一个称为日历的过程抛光床单和消除皱纹。连续的纸张被卷绕在大纸卷上,然后裁成各种宽度的纸张。<br>再生纸加工厂<br>再生纸加工厂使用纸张作为原料。回收的纸张在一个叫做碎浆机的大容器中与水结合,碎浆机的作用类似于搅拌机,将纸张中的纤维彼此分离。然后,生成的泥浆通过筛网和其他分离过程,去除诸如墨水、粘土、污垢、塑料和金属等污染物。纸浆中可接受的污染物数量取决于所生产纸张的类型。机械分离设备包括粗筛和细筛、离心式清洁器和分散或捏合装置,它们可以分离油墨颗粒。脱墨过程使用特殊的系统辅助肥皂或表面活性剂清洗或漂浮墨水和其他颗粒远离纤维。<br>回收纤维可用于生产完全由回收纤维(即100%回收含量)或由回收纤维和原始纤维混合制成的新纸制品。然而,纤维不能无休止地循环利用。一般认为,在纤维变得太短(由于再加工和其他处理的结果)不能用于新的纸制品之前,纤维可以使用五到七次。具有长纤维素纤维(如办公纸)的回收纸具有最大的再生利用率,因为它可以用来生产使用长纤维或短纤维的新纸产品。含有短纤维素纤维(如报纸)的回收纸只能回收到使用短纤维素纤维的其他产品中。因此,长纤维回收纸的价值通常高于短纤维回收纸。<br>
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