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lignosulphonate series from different pulp
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| Post Date: | Aug 09,2013 |
| Expiry Date: | Aug 09,2014 |
| Detailed Description: |
Quantity: 2000Metric Tons Specs:lignosulphonate: 55% min Payment Method: TT or LC Introduction of Black Liquor As we all know, lignosulphonate is mainly coming from papermaking black liquor. Here is the brief introduce of black liquor. Black liquor is the spent cooking liquor from the kraft process when digesting pulpwood into paper pulp removing lignin, hemicelluloses and other extractives from the wood to free the cellulose fibers. The equivalent spent cooking liquor in the sulfite process is usually called brown liquor, but the terms red liquor, thick liquor and sulfite liquor are also used. Approximately 7 tonnes of black liquor are produced in the manufacture of one tonne of pulp. The black liquor is an aqueous solution of lignin residues, hemicellulose, and the inorganic chemicals used in the process. The black liquor comprises 15% solids by weight of which 10% are inorganic and 5% are organic. Normally the organics in black liquor are 40-45% soaps, 35-45% lignin and 10-15% other organics. The organic matter in the black liquor is made up of water/alkali soluble degradation components from the wood. Lignin is degraded to shorter fragments with sulphur content at 1-2% and sodium content at about 6% of the dry solids. Where recovery boiler capacity is limited and a bottleneck in the pulp mill the lignin in the black liquor may be extracted. Because of black liquor differences, we produced three different grade ligno: wood pulp lignosulphonate, mix pulp lignosulphonate and straw pulp lignosulphonate. Among them, wood pulp grade is coming from pine pulp so the quality is the best one which cater to the high request. For construction, carbon black etc. areas, mix pulp will be the most economic choice. And the straw pulp will be the best for ceramic areas. |
| Company: | Wuhan Xinyingda Chemicals Co., Ltd. [ China ] |
| Contact: | Gloria Xia |
| Tel: | 0086-27-86617137, 0086 138715 |
| Fax: | 0086-27-86676453 |
| Email: | xydchemenquiry@gmail.com |
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