Anti-hardener for high-stability crystal ammonium nitrate without demulsification

Abstract

The invention provides an anti-hardener for high-stability crystal ammonium nitrate without demulsification, is characterized in that the anti-hardener is composed of a crystal controlling agent, a stabilizing agent, a desiccator and an antiadherent, and aims to solve defects such as the incompatibility of a modifier for crystal ammonium nitrate with an emulsifier in an emulsion explosive or powdery emulsion explosive matrix during the actual usage of the modifier developed by predecessors. According to the invention, an unsymmetrical structural anionic surfactant anionic surfactant sulfonateis used as the stabilizing agent to prevent the demulsification of the emulsification matrix during the process of the emulsion explosive or powdery emulsion explosive production and ensure the stabilization of the emulsion explosive or powdery emulsion explosive production technology and product storage period performance. The invention can also be applied in the preparation of loose expanded ammonium nitrate as well as a loose high-nitrogen nitro compound fertilizer. According to the invention, the additive concentration ranges from 0.12% to 0.15%.

Description

technical field [0001] The invention relates to a surfactant for improving the performance of crystallized ammonium nitrate, an oxidizing agent, which is the main component of industrial explosives, in particular to an anti-hardening agent for preparing loose crystallized ammonium nitrate with high stability and non-demulsification. The anti-hardening agent is composed of a crystal control agent, a stabilizer, a moisture-proof agent and an anti-sticking agent. Background technique [0002] So far, crystalline powdered ammonium nitrate is still the main component oxidizer of various powdery industrial explosives due to its simple production process, low equipment investment, high production efficiency, and easy crushing and processing with airflow or wheel milling equipment. However, because ammonium nitrate has inherent defects such as easy moisture absorption and crystal change, and because the production process and packaging temperature of crystalline ammonium nitrate are...

AI Technical Summary

Problems solved by technology

[0003] For half a century, researchers at home and abroad have made unremitting efforts to improve the hygroscopic and caking properties of crystalline ammonium nitrate: from the 1950s, paraffin and other hydrophobic agents were used; The advanced multi-level amine acetate technology and the anti-caking technology of organic dyes proposed in the United States in the 1980s. The above-mentioned improved technologies have not fundamentally changed the essence of ammonium nitrate, so the effect is not significant.

Modern Chinese patent 00113070.6 (2000), invented "low-density snowflake ammonium nitrate and its preparation method", using composite leavening agent and vacuum puffing process to produce low-density snowflake-like ammonium nitrate with good fluidity, and improve crystallization of ammonium nitrate The hygroscopic agglomeration level has been improved by one step, but the inventor has found in practice: there are still unreasonable processes, the product produced by this production process is too fine in particle size, and there is still agglomeration phenomenon when the packaging temperature is high and during storage The inventor then invented a new patent ZL02113572.X (2004) in 2004, invented a post-addition production process and a kind of anti-hardening agent, and made crystalline ammonium nitrate with good looseness within three months of storage period; However, in the application of this loose crystalline ammonium nitrate, it is found that the anti-hardening agent in the loose crystalline ammonium nitrate is incompatible with the emulsifier in the production process of emulsion explosives or powder milk explosives.

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