home contact us products find a sales agent applications lab testing technical library home > applications > pulp & paper PULP & PAPER Many Sweco separators have been installed in some of the world's largest paper mills. Using medium to fine mesh screens, the separators filter enough uniform quality coating to cover 2,100 miles of paper each day. Additional Applications Chemical Food & Beverage Minerals Pharmaceutical Plastic Pulp & Paper Ceramic Laundry Powder Coating PRODUCT RECOMMENDATIONS Vibratory Round Separators Rectangular Separators White Water Filters Decanter Centrifuges Parts & Screens APPLICATION 1: Many manufacturers face the serious problem of what to do with the effluent discharge associated with their processes. This is problematic in almost every industry known, and the paper industry is no exception. For instance, paperboard manufacturers have to deal with large amounts of fibrous material contained in the black liquor pressed from wood chips. This material needs to be cleaned up before they can introduce the water back into the sewage system. With Sweco Round Separators, the large amounts of fiber getting into the sewers have been eliminated and the B.O.D. reduced. At the same time, the valuable fiber is being recovered for reuse in the paperboard process. APPLICATION 2: Kaolin is fine white clay that is widely used in the making of paper and many other products. Screening is a very important component of the process flow from mining to marketable slurry. Typical Kaolin process flow starts with mining the clay. Large loads of clay are washed and rocks are removed. The hydrated clay goes to Sweco Hydrocyclones to remove sand particles. The slurry is then screened on Sweco EM3 Rectangular Separators and sent via pipeline to the next stage. The slurry goes through sand grinders to get the clay to a very fine particle size for its many uses. The slurry from the sand grinder is fed to multiple Sweco MM4 Rectangular Separators to recapture the good grinding beads. The slurry is screened again using Sweco UM4 Rectangular Separators to remove the remaining small grinding beads. The next process is to screen the slurry on Sweco UM3 and UM4 Rectangular Separators to further remove left over grinding beads and sand. At this point the slurry is bleached to product specifications which are important especially for paper coatings that require certain brightness. A portion of the final Kaolin slurry, after screening one more time on Sweco Round Separators, goes to railroad car load out. The remainder of the slurry is spray-dried, screened on round separators a final time, and then loaded into railroad cars. As you can see, Sweco separation equipment is vital to the kaolin clay, paperboard, and many other processes in the Paper Industry. Let Sweco help solve your separation problems. Contact a Sweco professional today. TYPICAL PULP & PAPER APPLICATIONS • Ash • Calcium • Cellulose Acetate • Clay • Coatings • Kaolin • Latex • Paper • Polymers • PVC • Pulp • Sawdust • Starch • Sulfur • Wash Water • White Water • Wood Chips about usused equipmentnewsorganizations & associationstradeshowssite map ©2009 Sweco, a business unit of M-I L.L.C. | legal policy | qhse policy