Detection method of reactivity between high-sulfur ore sample and emulsion explosive
A technology of emulsion explosives and reaction performance, which is applied in the direction of chemical reaction analysis of materials, material analysis and measurement devices through observation of the influence of chemical indicators, so as to ensure safety and facilitate observation.
Active Publication Date: 2021-02-09
BEIJING AUXIN CHEM TECH LTD
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[0003] In the mining process of high-sulfur mines, the explosive self-detonation is closely related to the nature of the explosive itself, the environmental conditions in the hole, the physical and chemical properties of the hole wall ore and residual drilling powder, and the charging time. A large number of studies have been carried out on risk assessment methods, for example, Journal of Central South University (Natural Science Edition), Volume 45, No. 8, August 2014, published "Sulphide Mine Explosive Self-explosion Hazard Based on Uncertain Measurement Model" Water-soluble Fe in sulfide ores 2+ +Fe 3+ content, water content, pH in water, pyrite content, blasthole temperature, etc., are used as discriminant indicators, and the weight is calculated for evaluation, but it does not involve the actual object, and there is still a certain degree of uncertainty. Therefore, the study of explosives and ore contact The detection method of the reaction has important guiding significance for the blasting operation
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[0033] The present invention will be further described in detail below in conjunction with the embodiments, so that those skilled in the art can implement it with reference to the description.
[0034]
[0035] According to the content of sulfur and iron in the ore samples, the ore samples are divided into five groups, numbered respectively: ore sample 1 (sulfur iron content <10%), ore sample 2 (10≤sulfur iron content <15%), ore sample 3 (15≤sulfur iron content<20%), ore sample 4 (20≤sulfur iron content<30%), ore sample 5 (sulfur iron content≥30%);
[0036] Take 5 groups of ore samples to grind and pass through a 100-mesh sieve to obtain mineral powder, and the mineral powder to make tides to obtain samples to be tested. Take 20g of each sample to be tested, and perform the following treatments respectively:
[0037] Add emulsion explosive (emulsion explosive formula: 18% water in the water phase, 2.5% inhibitor, 79.5% nitrate, 70% diesel oil in the oil phase, 30% emulsifier...
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Abstract
The invention discloses a method for detecting the reaction performance of a high-sulfur ore sample and an emulsion explosive, which comprises the following steps: Step 1: Take ore from a mining area to be mined, grind it through a 100-mesh sieve to obtain mineral powder, and obtain mineral powder by making tides with the mineral powder Sample to be tested; step 2, mixing the sample to be tested with an emulsion explosive with a mass ratio of 2:1 to obtain a mixture; step 3, putting the mixture into a glass test tube and placing it in a constant temperature water bath, according to the dosage ratio of 15g : Add 1 mL of water dropwise to the test tube, adjust the initial temperature of the constant temperature water bath to 65°C, increase the temperature to 95°C with a gradient of 5°C, record the height of the sample, the pH value of the sample, and the reaction phenomenon of the sample. The invention relates to physical reaction, and has the advantages of simple and effective method.
Description
technical field [0001] The invention relates to the technical field of explosive reaction performance detection. More specifically, the invention relates to a method for detecting the reaction performance of high-sulfur ore samples and emulsion explosives. Background technique [0002] In the deep-hole blasting operation of high-sulfur mines mixed with emulsion explosives on site, spontaneous combustion sometimes occurs. Taking domestic mines as an example, mines such as Tongkeng Tin Mine, Shuikoushan Lead-Zinc Mine, and Qingshan Pyrite Mine have occurred to varying degrees. Explosive self-explosion accident. Explosive spontaneous combustion accidents not only threaten the life safety of blasting personnel and mine production, but also cause huge economic losses to enterprises. Therefore, in the production process of high-sulfur mines, the scientific prediction of the self-detonation risk of emulsion explosives, the determination of the scope of application of explosives u...
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IPC IPC(8): G01N33/22G01N21/78
CPCG01N21/78G01N33/227
Inventor 徐利邵金生简国祚段勇彬孙继林李传增王建斐
Owner BEIJING AUXIN CHEM TECH LTD