6 results about "Detonator" patented technology

The invention provides a thick ore body mining method. A thick ore body refers to an ore body thicker than 5m. According to a chamber type filling mining technique, upper and lower passages are respectively constructed in the middle and on two sides of a chamber along a cutting direction, roof cutting is performed towards the upper passage along a stoping line, a roof and side wall bolting nets are subjected to shotcrete supporting, and the lower passage are descended towards two sides along the stoping line and filled. The method includes steps of upper roof cutting, lower step descending, hierarchical segmented blasting, deslagging and loading, lower wet filling and upper cementing roof connection. By means of stepped full-layer descending mining, a free face is widened to increase blasting efficiency while material consumption caused by secondary descending is avoided, explosive consumption is reduced by 0.12Kg/t, detonator consumption is reduced by 0.11 detonator per t, and consumption of steel chisels and drills is reduced by 0.02Kg/t.

The present invention relates to an igniter of priming system, in particular, it relates to an igniter for lighting condensed fire explosive powder under the high-pressure environment. Said invention includes an igniter made of metal material, said igniter has a hollow cavity, an igniter sealed metal cone which is placed in the igniter hollow cavity and is connected with said igniter and an igniting device component connected with said igniter. In said invention said igniting device seat can be separated into two portions which are not communicated mutually by means of igniting primer, so that the interior of igniter communicated with interior of igniting primer is atmospheric environment pressure, therefore it is convenient for lighting ignition powder. Said invention adopts the metal tube with good heat conductivity as igniting primer, so that it not only raises the ignition temperature, but also ensures enough ignition area.

The invention relates to a special press machine for industrial detonator including the frame, the four vertical columns set at the sides of the frame which the bottom is connected with the lifting board; the top is connected with the hydraulic pressure compensating ram head which the hydraulic hollow is connected to the hydraulic pressure mouth of the air-liquid pressure mechanism by the oil pipe. The main air cylinder base is fixed on the back of the frame working table and the end of the main air cylinder piston poleis connected with the lifting board. The advantage is: first the device costs little and has small size; second it uses the character of detonator pressing powder to decrease the device cost and eliminate the noise; third is convenience to control automatically and proper for the technology advance in filling detonator.

The invention discloses a preparation method of a titanium/aluminum/magnesium composite plate. The method comprises the following steps: by taking a titanium alloy plate and an aluminum alloy plate as flying plates and a magnesium alloy plate as a base plate, polishing the aluminum alloy plate and the titanium alloy plate, and sequentially stacking the aluminum alloy plate and the titanium alloy plate on the polished magnesium alloy plate; and placing an aluminum support between adjacent plates in the magnesium alloy plate, the aluminum alloy plate and the titanium alloy plate, then coating a plastic film on the surface of the titanium alloy plate back to the base plate, laying an explosive on the plastic film, placing a detonator in the explosive, igniting the detonator to detonate the explosive for explosive welding, and obtaining the titanium/aluminum/magnesium composite plate. According to the method, the titanium/aluminum/magnesium composite plate is prepared by adopting the explosive welding method, so that good combination is formed at interlayer interfaces of the plates, and the titanium/aluminum/magnesium composite plate is prepared in an extremely short time, so that oxides are not easy to form at combination interface of the magnesium alloy plate, and the mechanical property of the titanium/aluminum/magnesium composite plate is improved.

The invention discloses a novel initiating explosive charging structure detonator. The novel initiating explosive charging structure detonator comprises a detonator shell, a sealing plug, a paper pad,a detonator ignition element, an air chamber, a plastic plug, a hollow explosive chamber (initiating explosive charging chamber), a main explosive charging chamber and an energy gathering cavity. Asfor the detonator ignition element, electric detonators and non-electric detonators are both applied to existing detonator ignition elements (electric and non-electric). The plastic plug has a novel and creative structure and has parameters such as the aperture, the taper angle, the outer diameter, the height and the like of the hollow explosive chamber. The plastic plug is internally provided with a transverse cylindrical and circular truncated cone-shaped hollow explosive chamber. The hollow explosive chamber serves as the initiating explosive charging chamber of the detonator. Through the novel initiating explosive charging structure detonator, the initiating explosive charging amount of the detonator is reduced without affecting output energy of the detonator, and pollution of DDNP tothe environment can be reduced. The novel initiating explosive charging structure detonator is provided with the novel and creative plastic plug replacing a reinforcing cap, the production cost of thedetonator is lowered, and economic benefits of engineering blasting is increased. Thus, the novel initiating explosive charging structure detonator is suitable for application and popularization.