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What is Lignosulphonate?
Lignin sulfonate is a class of compounds derived from lignin. Lignin is the main component of plant cell walls and exists in wood, herbs, etc. When lignin is chemically treated to sulfonate it, lignin sulfonate is obtained.
This substance has many unique properties and uses. In terms of its properties, lignin sulfonate is soluble in water, exhibits surface activity, and can reduce the surface tension of liquids. And it has certain dispersibility and adhesion.
In industrial use, lignin sulfonate is widely used. In the field of concrete, it is often used as a water reducer. Adding this agent to concrete can reduce the amount of mixing water without damaging the fluidity of the concrete, thereby improving the strength and durability of the concrete. In the pesticide industry, it can be used as a dispersant. Pesticides are mostly solid powders or oily liquids. To be evenly dispersed in water to make a stable suspension or emulsion, lignin sulfonate can help achieve it, so that the active ingredients of the pesticide are evenly distributed and the efficacy is enhanced. In the leather tanning process, lignin sulfonate can be used as a tanning agent auxiliary material to assist the tanning process of leather and improve the quality of leather. In the dye industry, it can also be used as a dispersant to help the dye be evenly dispersed in the dye solution, making the dyeing more uniform.
Overall, lignin sulfonate has important applications in many industrial fields due to its unique chemical structure and physical properties, making it an indispensable material in industrial production.
What are the main applications of Lignosulphonate?
Lignin sulfonate has a wide range of uses. In the field of construction, it can be used as a concrete water reducer. Adding this agent to concrete can reduce the water-cement ratio, increase its fluidity, make concrete easier to pour, and can improve its strength and durability. In ancient construction, if you want to build thick walls and stable bridges, if you get this agent, the fortification may be smoother.
In oil mining, lignin sulfonate can be used as a drilling mud additive. It can stabilize the performance of mud, reduce its filtration loss, make the well wall stable during drilling, and prevent the risk of collapse of holes. Just like digging wells in ancient times, you need to keep the well wall solid to avoid damage and injury.
On top of agriculture, it can be used as a slow-release agent for fertilizers. It can release nutrients slowly, prolong fertilizer efficiency, and help crops absorb nutrients for a long time. Just like the farmers of ancient times, they hope that the earth will be fertile and the harvest will be rich. This agent may help.
In the paper industry, lignin sulfonate is extracted from the pulping waste liquid and can be reused after treatment. This is also an act of resource recycling. It is like ancient materials to make the best use of them without discarding waste materials. In the chemical industry, it can be used as a dispersant. In the production of dyes, pigments, etc., the particles are evenly dispersed and the color is more uniform, just like the color palette in ancient times.
What is the production process of Lignosulphonate?
The production process of lignin sulfonate starts with lignin and is obtained by chemical means. Lignin exists in the plant cell wall and is a natural polymer. Its extraction is mostly derived from the waste liquid of papermaking, which is the way to turn waste into treasure.
The first is the extraction of lignin. Paper black liquor, rich in lignin, can precipitate lignin through acidification, precipitation and other methods. Then the lignin is sulfonated to increase its water solubility and surface activity. The sulfonating agent is often sulfite. Under suitable temperature, pressure and pH value, lignin reacts with the sulfonating agent to introduce a sulfonic acid group.
When reacting, the temperature needs to be carefully controlled. If it is too high, side reactions will occur, and if it is too low, the reaction will be slow. The pressure should also be appropriate to help the reaction be efficient. The pH value has a great impact on the reaction process and product performance. Different lignin raw materials and product requirements have different suitable pH values.
Sulfonated, the product contains unreacted raw materials, by-products, etc., which need to be refined and purified. Common methods are filtration, centrifugation, dialysis, etc., to remove impurities to obtain pure lignin sulfonate.
After the use of the product, the lignin sulfonate is modified. For example, other functional groups are introduced to change their adsorption, dispersion, chelation and other properties to meet various industrial needs, used in concrete water reducers, pesticide dispersants, oil drilling aids, etc.
In this process, the operation of each step is accurate and the conditions are suitable to produce high-quality lignin sulfonate, which can be used in the industrial field.
What are the precautions for using Lignosulphonate?
For lignin sulfonate, when using it, all kinds of matters must be paid attention to. First, the dosage used should be carefully reviewed. If the dosage is too small, the effect is not obvious; if the dosage is too large, it may cause adverse effects, only increase the cost, and it may be harmful to the system. If used in concrete, the dosage is obedient, or it may cause changes in the strength and strength when it condenses.
Second, the environment of the system cannot be ignored. Among them, pH value and temperature are especially important. Lignin sulfonate is different in different pH environments. If the pH is uncomfortable, its ability to disperse and stabilize may be impaired. The same is true for temperature, too high or too low may hinder its development. If it is under high temperature, the structure or change of its molecules will reduce its activity.
Third, other substances that are compatible with it should also be cautious. Mixing with it, or generating with it, increases its effect; or interacting with it, impairs its function. If used in combination with certain additives, or having a chemical reaction, it will cause precipitation and flocculation, which will damage its original properties.
Fourth, when storing, also pay attention to it. It should be placed in a cool and dry place to avoid moisture and prevent high temperature. If stored improperly, or cause it to deliquescence and deterioration, when used, the effect will be much worse than before. If it is damp, its fluidity will change, and the active ingredients may be damaged.
In summary, when using lignin sulfonate, attention should be paid to the dosage, environment, compatibility, and storage, so that it can be used to its fullest extent and achieve good results.
What is the price range of Lignosulphonate in the market?
The price range of lignin sulfonate in the market often varies depending on quality, supply and demand, and market conditions. Looking back at the past, the price has changed with the abundance of raw materials and the difficulty of production.
Generally speaking, industrial grade lignin sulfonate, if the quality is ordinary, the price per ton may be between hundreds and thousands of yuan. If the quality is excellent and has special properties, such as for high-end building materials and oil drilling aids, the price may be higher.
When the raw materials are abundant, the production process is skilled, and the market supply is abundant, the price tends to decrease; conversely, if the raw materials are scarce, the production is blocked, or the market demand is strong, the price tends to increase.
Lignin sulfonate is used for different purposes, and the price is also different. For ordinary concrete water reducers, the price may be relatively flat; while for fine fields such as special chemicals and pharmaceutical excipients, due to their strict requirements on purity and performance, the price is often expensive.
Therefore, to determine its accurate price, it is necessary to carefully check the local market conditions at that time, such as consulting suppliers and observing industry reports.