Anti-caking agent for powdery chemical fertilizer

Abstract

The invention discloses an anti-caking agent for a powdery chemical fertilizer. The anti-caking agent for the powdery chemical fertilizer is prepared from oyster shell micro powder, talcum powder and an anionic surfactant. The anti-caking agent for the powdery chemical fertilizer comprises the following chemical components in percent by mass: 30-65% of calcium carbonate, 0.5-3.5% of stearic acid, 0.5-4.5% of sodium dodecyl benzene sulfonate, 15-35% of silicon dioxide, 10-20% of magnesium oxide and 5-10% of calcium oxide. The anti-caking agent for the powdery chemical fertilizer has strong adsorbability and good anti-caking property, is easy to be degraded, non-pollution, convenient to use and low in usage amount, is rich in nutrient elements, such as calcium and magnesium, required by crop growth, can be combined with an oily anti-caking agent to be applied, especially has a more obvious effect on a high-nutrient chemical fertilizer, and is lower in comprehensive cost; a main ingredient oyster shell is available and cheap, has a nano micropore structure, contains multiple amino acids and trace elements, and also has the effect of alleviating soil hardening.

Description

technical field [0001] The invention relates to an efficient and environment-friendly powdery anti-caking agent, in particular to a powdery chemical fertilizer anti-caking agent suitable for compounding / hefei anti-caking, and belongs to the technical field of fertilizer additive production. Background technique [0002] The problem of chemical fertilizer agglomeration has always been a major problem that the chemical fertilizer industry is committed to solving. Whether it is a single fertilizer or a compound (compound) fertilizer, agglomeration will bring a lot of inconvenience to the transportation, storage and fertilization of fertilizers. Not only that, severely agglomerated fertilizers are difficult to break, and some agglomerated fertilizers are not good for mechanical fertilization. Small pieces are easy to block the nozzle and are not easy to find. Agglomerated fertilizers often need to be manually broken when used, which is time-consuming and laborious and seriously a...

AI Technical Summary

Problems solved by technology

[0002] The problem of chemical fertilizer caking has always been a major problem that the chemical fertilizer industry is committed to solving. Whether it is a single fertilizer or a compound (compound) fertilizer, caking will bring a lot of inconvenience to the transportation, storage and fertilization of fertilizers

[0004] To sum up the main problems of anti-caking agents used in China at present are as follows: 1. Various types of anti-caking agents have their own advantages and disadvantages, and it is difficult to achieve the unity of use effect, scope of application and cheap price. Although some imported products are anti-caking agents The effect is good, but the price is higher, which increases agricultural costs; second, the environmental pollution and soil damage caused by the use of anti-caking agents still exist, and it is imperative to develop efficient and environmentally friendly anti-caking agents; third, some domestically produced The raw materials of the anti-caking agent are easy to obtain and the price is cheap, but the formula is often complex and the preparation process is many, which still cannot meet the requirements of the actual production and use of the chemical fertilizer industry

[0005] A large amount of solid waste oyster shells are produced during the processing of oysters and other shellfish seafood in coastal areas. Oyster shells are mainly disposed of in garbage dumps or reclamation as solid waste. During the long-term stacking process, they become rotten and smelly, causing serious pollution to the environment.