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     Lignosulfonate treatment

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  For metallurgists

The application of lignosulfonates is widely spread as a binding material for sand and core sand mixtures in foundry. During manufacture of sand and core sand mixtures for cast iron, non-ferrous and steel casting lignosulfonates replace some deficit and toxic materials: phenolic alcohols, carbamide-formaldehyde, phenolformaldehyde pitchs. While using binding substances on the base of lignosulfonates reducing of cost price of suitable raw passes, rising of durability of core, reducing of their flowability up to 0,05-0,08%, reducing of temperature and retrenchment of time of the warm hot-setting. Lignosulfonates are used as a flotation reagent and binding reagent for briqueting close grained raw. They are widely used as a binding substances and plastificator in production of aglomeration of head, acid corrosion, hardening, etc.

   
 
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