Calcium lignosulfonate, referred to as wood calcium, is a multi-component high molecular polymer anionic surfactant. Its appearance is light yellow to dark brown powder with a slight aromatic odor. It is easily soluble in water and has good stability. Its molecular weight is generally between 800 and 10,000, and this product has strong dispersibility, adhesion and chelating properties.
Most importantly, calcium lignosulphonate has a very wide range of uses, such as concrete water reducers, industrial detergents, pesticides and insecticides, herbicides, dye diffusing agents, coke and charcoal processing, petroleum industry, ceramics, wax emulsions, etc.
| Index items | Standard value | Test Results |
| Appearance | Brown powder | Meets the requirement |
| Moisture | ≤5.0% | 3.2 |
| PH value | 8–10 | 8.2 |
| Dry matter | ≥92% | 95 |
| lignosulphonate | ≥50% | 56 |
| Inorganic salts(Na2SO4 | ≤5.0% | 2.3 |
| Total reducing matter | ≤6.0% | 4.7 |
| Water insoluble matter | ≤4.0% | 3.67 |
| Calcium magnesium general quantity | ≤1.0% | 0.78 |
Especially in the construction industry, calcium lignin sulfonate is the most widely used and fundamental concrete water reducer. It not only reduces cement usage and saves costs, but also improves concrete’s performance and durability. With the development of new concrete technologies such as high-performance concrete and self-compacting concrete, calcium lignin sulfonate can be further modified to meet the specific needs of different concrete types. For example, in large-volume concrete construction, its retarding properties can effectively control hydration heat and prevent concrete cracking. In precast component production, it can optimize concrete’s setting time and early strength, improving production efficiency and product quality. In the future, as the construction industry’s demand for green, environmentally friendly, and high-performance building materials continues to grow, the application of calcium lignin sulfonate in the construction sector will continue to deepen and expand.
The main performance characteristics of calcium lignosulphonate water reducer:
- Significant water reduction effect. Calcium lignin sulfonate water reducer can significantly reduce the water consumption of concrete, improve the fluidity of concrete, and make concrete easier to mix, transport and pour.
- Improve concrete performance. Under the same water consumption, calcium lignin sulfonate water reducer can significantly improve the compressive strength and flexural strength of concrete and improve the durability of concrete.
- Improve construction efficiency. As the fluidity of concrete is enhanced, the construction efficiency will also be improved accordingly, reducing construction time and labor costs.
- Environmentally friendly and pollution-free. Calcium lignin sulfonate water reducer does not contain harmful substances, does not pollute the environment, and meets the requirements of green environmental protection.
- Suitable for various types of concrete projects, such as industrial and civil construction, road and railway construction, precast concrete products and special projects.
- Used as a concrete water reducer: it can improve the workability of concrete and improve the quality of the project. It can be used in summer to suppress slump loss, and it is generally used in combination with superplasticizers.
- Used as a mineral binder: in the smelting industry, calcium lignosulfonate is mixed with mineral powder to form mineral powder balls, which are dried and placed in the kiln, which can greatly increase the smelting recovery rate.
- Refractory materials: When making refractory bricks and tiles, calcium lignin sulfonate is used as a dispersant and adhesive, which can significantly improve the operating performance, and has good effects such as water reduction, strengthening, and prevention of cracks.
- Ceramic industry: Calcium lignosulfonate is used in ceramic products, which can reduce the carbon content and increase the green strength, reduce the amount of plastic clay, have good mud fluidity, and increase the finished product rate by 70-90%.
- Used as a feed binder: it can improve the preference of livestock and poultry, with good particle strength, reduce the amount of fine powder in the feed, reduce the powder return rate, and reduce the cost.
- Others: it can also be used in refining auxiliary, casting, pesticide wettable powder processing, briquette pressing, mining, beneficiation agent, road, soil, dust control, tanning and leather filler, Carbon black granulation and other aspects.
As the main component of concrete water reducer, calcium lignosulfonate can effectively reduce the mixing water consumption of concrete and improve the fluidity and working performance of concrete. Its mechanism of action is mainly reflected in the following aspects:
First, calcium lignosulphonate changes the charge distribution and surface properties of cement particles by adsorbing on the surface of cement particles, so that the electrostatic repulsion between particles is enhanced, thereby achieving uniform dispersion of cement particles.
Secondly, the dispersing effect of calcium lignin sulfonate helps to reduce the pores and microcracks in concrete and improve the density and strength of concrete. At the same time, the released free water can participate in the hydration reaction in concrete and promote the hardening process of concrete.
Finally, this product can also improve the workability of concrete, improve the construction performance of concrete, reduce the pumping resistance of concrete, and reduce energy consumption and cost.
1. Standard Storage Conditions
The calcium lignosulfonate powder should be stored in a cool, dry, and well-ventilated warehouse to prevent moisture and caking. ① If slight caking occurs, it can be crushed and used normally without significant performance degradation. ② If severe caking occurs (lump diameter >5cm), it indicates moisture absorption and deterioration and should be discarded. It should not be used in projects.
Calcium lignin sulfonate (liquid concentration 30%-50%) should be protected from freezing at low temperatures (freezing point approximately -5°C). It will delaminate and lose its effectiveness upon freezing. It should be stored above 5°C for no more than 6 months to prevent microbial growth.
2. Safety Instructions
Operators must wear a dust mask (solid powder) or protective gloves (liquid) to avoid inhalation or direct skin contact. ① If the powder is inhaled into the respiratory tract, move immediately to a well-ventilated area and drink plenty of water. ② If the liquid comes into contact with skin, rinse with clean water for at least 15 minutes to avoid allergic reactions. (A few people may experience itching; seek medical attention promptly.)
Do not store with food or feed to prevent accidental ingestion. “Not for consumption” warning signs must be posted in storage areas.
Buy Calcium Lignosulfonate from Kingsun Factory
As a leading lignosulfonate manufacturer in China, Kingsun company has more than 15 years’ experience in construction chemicals industry. So we can supply top quality calcium lignosulfonate powder and sodium lignosulfonate for all the customers. What’s more, our products have a good reputation in the domestic and foreign markets. So far, Kingsun products have been exported to around 30 countries and regions, they are Israel, Qatar, Pakistan, Bahrain, Mexico, Chile, Brazil, Turkey, Saudi Arabia, UAE, South Africa, Jordan, Russia, Peru, Bangladesh, India, South Korea, Indonesia, Thailand, Philippines, Vietnam, Malaysia, Singapore, etc. This is the reason why Kingsun is your good choice.
- Kingsun makes the business become professional & simple & easy in construction industry.
- All of Kingsun products have passed ISO and SGS certifications, which can ensure the qualified products and traceability.
- We always provide the excellent services and competitive prices for all the clients.
- The feedback from our clients will be treated seriously and promptly.
