190results about How to "Good explosive performance" patented technology

The invention discloses a plant type compound oil phase for an emulsion explosive. The compound oil phase comprises main components of plant wax and plant oil, and is characterized by comprising the following materials by mass: 20%-50% of the plant wax, 10%-25% of the plant oil, 10%-25% of light dewaxing paste, 20%-35% of an emulsifier and 5%-15% of additives, wherein the total mass percentage of the materials is 100%. The compound oil phase prepared from the plant wax and the plant oil is applied to the industrial explosive production, so that a production process is simplified, and the production process quality is conveniently controlled; the compound oil phase is proper in drop melting point, acid value, needle penetration degree and kinematic viscosity, and is an ideal emulsion explosive oil phase material; the produced emulsion explosive is good in explosion performance; the plant oil phase material is clean, environment-friendly, low in price and highly available, and can effectively reduce the production cost; the compound oil phase used for producing the emulsion explosive has good economic and social benefits and is convenient for industrialization production and application.

The invention discloses a powdery emulsion ammonium nitrate fuel oil explosive allowed to be used in coal mines and a preparation technology thereof, which is compounded and prepared by using rock powdery emulsion explosive which has good characteristics of high sensitivity to initiation, high detonation velocity and high explosive grading, to mix with ammonium nitrate fuel oil explosive containing a certain amount of flame inhibitor, wherein, the rock powdery emulsion explosive accounts for 28 percent to 32 percent of the total weight of the explosive and the fire-resistant ammonium nitrate fuel oil explosive accounts for 68 percent to 72 percent of the total weight of the explosive. The rock powdery emulsion explosive is an industrial explosive like powder formed from water-in-oil type latex base material which is sprayed and dried. The rock powdery emulsion explosive can be mixed into ordinary ammonium nitrate fuel oil explosive to replace trinitrotoluene and plays a sensitization role in the explosive to increase the explosive performance of compound explosive. The grade I and the grade II explosive prescriptions of the invention are respectively applicable to the excavating working faces of low-methane rock or low-methane coal beds and mines and the preparation technology thereof is applicable to the discontinuous or continuous automatic production of the powdery emulsion ammonium nitrate fuel oil explosive used in the coal mines.

The invention discloses novel sensitization bubble carrier colloidal emulsion explosive. The colloidal emulsion explosive comprises the following components: inorganic oxidizer salt, water, a compound oil phase, an emulgator, a compound flame inhibitor, a sensitizer, a foaming agent and a foaming accelerant, wherein the inorganic oxidizer salt is a mixture of ammonium nitrate, sodium nitrate and urea. The invention also designs a preparation method of the novel sensitization bubble carrier colloidal emulsion explosive. The preparation method comprises the following steps: firstly preparing a water phase, adding an oil phase to the water phase for mixing, then sequentially emulsifying and sensitizing, and finally filling to obtain a finished product. The novel sensitization bubble carrier colloidal emulsion explosive is good in water resistance, excellent in explosive performance, proper in sensitivity, suitable for blasting of various environments, simple and convenient in production process, low in affect on environment and low in cost.

The invention relates to a low-temperature-resistant high-power coalmine-permitted water-gel explosive and a manufacturing method thereof. The explosive is composed of a methylamine nitrate solution, water, ammonium nitrate, sodium nitrate, formamide, urea, sodium dodecylbenzenesulfonate, sesbania powder, fine atomized aluminum powder, a composite alkali metal halide flame inhibitor, expanded perlite powder, a foam stabilizer and a crosslinking agent. According to the invention, sodium nitrate and sesbania powder are first well mixed; ammonium nitrate is dissolved in water, such that an ammonium nitrate solution is prepared; formamide is dissolved in the methylamine nitrate solution; the three are mixed in an agent mixing tank; the composite alkali metal halide flame inhibitor, the fine atomized aluminum powder, the expanded perlite powder, the foam stabilizer and the crosslinking agent are sequentially added; and the mixture is well mixed and is packaged into sticks. The explosive has high explosion power, and can be normally initiated and detonated under an experimental temperature of 0 DEG C to -20 DEG C. The explosive does not contain toxic component, and does not pollute the environment. The process is simple, and continuous production can be realized.

The invention relates to a powdery emulsion explosive, which is prepared by the following steps: taking the raw materials of 75-85% of ammonium nitrate, 5-10% of auxiliary oxidant, 2-6% of organic oil-phase material, 0.7-1.3% of emulsifier, 1-3% of cosolvent, 1-11% of blast reducer and 1-5% of water by weight, wherein the organic oil-phase material takes decompressing cerate, petroleum wax, foots oil and polymer as basic raw materials in current technology, supplementing a phospholipid additive, introducing air under the conditions of temperature of 140-180 DEG C and an 0.1%-1.0% oxidation catalyst, and reacting for 2-10 hours. The present invention improves explosive performance, water resistance, moisture resistance, caking resistance and storage stability of the powdery emulsion explosive, and reduces the usage amount of emulsifier. The powdery emulsion explosive is subjected to industrial production under any environment, and completely eliminates harm of TNT on human and environment.

The invention relates to a fast sensitizer for emulsion explosive, which comprises components A and B in weight percent: component A: 15-42% of sodium nitrite, 15-42% of ammonium nitrate and 14-68% of water; component B: 40-60% of oxalic acid and 40-60% of thiourea; and the mixed ratio of component A to component B is 30-50:1. The fast sensitizer of the invention has fast foaming speed, simple process, convenient operation, low production cost and no aftereffect reaction; and the emulsion explosive prepared by the fast sensitizer has good explosive property, high brisance and strong work capacity.

The invention discloses an energy-saving and environment-friendly expanded ammonium nitrate explosive, which is prepared from the following raw materials in parts by weight: 80.5 to 94.5 parts of expanded ammonium nitrate, 1.5 to 4.5 parts of oil phase, 2.5 to 5.5 parts of straw powder and 0 to 12 parts of salt, wherein the oil phase is diesel, motor oil or paraffin; and the straw powder is a solid hydrocarbon with a formula of C47H75O27. The energy-saving and environment-friendly expanded ammonium nitrate explosive is favorable for improving the level of environmental protection, energy saving and consumption reduction in the production of the explosive and is favorable for improving the level of safety production of the explosive and the explosive quality.