Ammonium nitrate modifier for electric blasting

Abstract

The invention discloses an ammonium nitrate modifier for electric blasting. The ammonium nitrate modifier is prepared from the following raw materials in percentage by weight: 7-12kg of octadecylamine and 20-28kg of 14-26 percent phosphoric acid water solution. The ammonium nitrate modifier is obtained by the following steps of: carrying out a chemical reaction on the octadecylamine and the phosphoric acid water solution at 85-100 DEG C; dehydrating by using a dehydrator after reacting; drying by using a drying machine; and finally ball milling by using a ball milling machine. Since the ammonium nitrate modifier for electric blasting is formed by carrying out a chemical reaction on the octadecylamine and the phosphoric acid water solution at high temperature and then carrying out dehydrating, drying and ball milling treatment; ammonium nitrate in the prepared modifier granule has crystallizing change points at 32.3 DEG C and 84.2 DEG C; and if the ammonium nitrate modification is carried out at the two crystallizing change points, the quality of products can be greatly improved. By changing the crystal structure of the ammonium nitrate at high temperature (85-100 DEG C), the specific area of the ammonium nitrate can be increased, and thereby the performance of the ammonium nitrate is changed.

Description

technical field [0001] The invention belongs to the technical field of additives for electric blasting, in particular to an ammonium nitrate modifier for electric blasting. Background technique [0002] Explosive equipment used in power facilities requires low cost and high power. For many years, in order to improve product performance and reduce production costs, electric blasting has tried to develop and produce 2# and 4# rock ammonium ladder explosives, with the main goal of reducing TNT, supplemented by fuel and other high-heat substances as combustible agents (ie reducing agents) , to the direction of few ladders and no ladders, and then achieve the cancellation of TNT-containing ladder explosives. Ammonium nitrate, the main raw material of the ladder-containing explosive, is modified to meet the various performance indicators of the explosive and achieve the goal of less ladders or no ladders. [0003] At present, the ammonium nitrate modifier used in China is basica...

AI Technical Summary

Problems solved by technology

[0003] At present, the ammonium nitrate modifier used in China is basically to solve the anti-caking hardening as the main purpose, the base material is also mainly ferric ammonium sulfate, diatomaceous earth, quartz powder, etc., adding some surface active substances such as sodium lauryl sulfate The substance is physically mixed, dried, and ball milled to make it fine enough to pass through a 200-mesh sieve, thereby blocking the formation of the "salt bridge" effect of ammonium nitrate agglomeration, but basically has no effect on the improvement of the performance of explosive products

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