0 Preface The goaf is generally the space left after the mining of the deposit by the mining method such as the room-pillar method, the comprehensive method and the retention method. If it is not treated or handled improperly, it will cause significant safety hazards. The treatment methods at hom
Read more    1 The number of main chutes should not be less than two in the mines with complex engineering geology, hydrogeological conditions or annual circulation of more than 1000 kt .     2 The main chute should be vertical, the single-segment vertical height should not b
Read moreBefore the design, the beneficiation tests of different scales have been made according to the complexity of the ore properties. Two or three comparison schemes may be obtained in the test report, and there may be unsolved or difficult to determine problems in the test. The design process should be
Read more[Chinese instrument network meter patent] creative limit, instrumentation invention. Today, we introduced a national invention-issued patent - a photoelectric direct-reading water meter sensor to suppress air bubble interference. The patent was applied by Jiangsu Junpu Intelligent Instrument Co., Lt
Read moreAccording to a Reuters quoted two people familiar with the matter on Wednesday, German luxury car manufacturer BMW is seeking to set up a joint venture with Great Wall Motor in China to focus on the production of electric vehicles. “We are discussing with Great Wall Motor Co. to establish a
Read moreForeign-invested auto companies are adjusting their layout in the Chinese market, and some relatively weak partners will be victims of this adjustment. On July 24, Iveco announced that it has reached a joint venture agreement with SAIC. The joint venture plans to acquire a 67% stake in heavy-duty
Read more1 Resource reserves and production There are 8 iron mines in Shandong Province, including one central enterprise. In 2003, the total amount of mining (peeling) was 10.09 million tons, the output of raw ore was 6.204 million tons, and the output of finished ore was 3.325 million tons (including iro
Read moreWater pump trip fault elimination method: 1. Symptom: Since the 125 mw unit of a power plant has been put into operation, the feed pump will occasionally trip or trip, and there is no signal relay drop. After eliminating the failure of the switching mechanism, the cables, secondary circu
Read moreIveco cars equipped with vacuum booster, which allows the car even at low speeds, light brake pedal, it will have a higher braking effect, which will lead to the front brake system is too sensitive, easy to lock Slip, reduce driving stability. To avoid these drawbacks, a hysteresis valve was insta
Read moreOn March 21, 2011, Vaahto, a Finnish pulp and paper machine, had received an order from the paper mill in Imatra, Stora Enn, Finland. According to news received by the Russian analysis agency Lesprom Network, the plant's chemical pulp drying equipment will be transformed to achieve higher prod
Read moreModel NO.: MELEE MOULD -760 Runner: Cold Runner Design Software: UG
Read moreTrademark: SP Transport Package: Shrinking Film, Carton, Wooden Pallet or by Custom Specification: Aluminum Alloy
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