sodium lignosulfonate

The addition of sodium lignosulfonate into concrete will cause the hydrophobic groups to be adsorbed on the surface of the cement particles, making the cement negatively charged. Because cement particles with the same charge repel and disperse each other under the action of the charge repulsion. The flocculent structure formed in the initial stage of water addition becomes a dispersed structure. Thus release the free water in the flocculated aggregate, thereby achieving the purpose of a water reducing agent.

With the addition of sodium lignosulfonate, there are fewer capillary pores left by the evaporation of free water, and the internal structure is dense. That is to say, the reduction of porosity is obviously conducive to the improvement of concrete strength. At the same time, it also improve the size and distribution of the pore structure of cement. The speed of crystal growth is delayed and the crystal growth is more complete, so more fibrous crystals are interspersed with each other to form a strong network structure, which significantly increases the strength of the concrete. Therefore, mixing lignosulfonate acid sodium salt water-reducing agent in concrete can reduce the water consumption of the concrete mixture, reduce the water-cement ratio, improve workability, facilitate pumping, and improve concrete strength, compactness and durability.

The addition of sodium lignosulfonate in the process of preparing coal water slurry can increase the output of the mill, maintain the normal state of the pulping system, reduce the power consumption of the slurry, and increase the concentration of the coal water slurry. During the gasification process, the oxygen consumption and coal consumption decrease, but the cold gas efficiency increases. The coal water slurry can reduce the viscosity and reach a certain degree of stability and fluidity.

In the manufacturing process of large-size wall and floor tiles and refractory bricks, the water reducer can make the raw material particles of the green body firmly bond. And it can increase the strength of the dry green body by more than 20%-60%.

When as a dispersant and filler for vat dyes and disperse dyes, it can increase the color power of the dye, make the coloring more uniform, and shorten the time of dye grinding. In pesticide processing, it can be used as filler, dispersant and suspending agent, greatly improving the suspension rate and wetting performance of wettable powder.

It can be used for pressing spheroids of iron ore powder, lead-zinc ore powder, pulverized coal, and coke powder. Also for pressing of cast iron and cast steel sand molds, extrusion molding of mud brick walls and floor tiles.

Improve fluidity in crude oil transportation and reduce energy consumption. In petroleum products, it is as a cleaning agent, dispersant, high-alkaline additive, anti-rust agent, anti-static agent, emulsifying viscosity reducer, wax removing agent, etc.

Blending Lignin and its derivatives with polyvinyl chloride (PVC), polyethylene (PE), polyvinyl alcohol (PVA) and other olefin polymer materials can improve the stability, strength and anti-photolysis properties of the material.