35results about How to "To achieve the purpose of increasing production and efficiency" patented technology

The present invention discloses a sonic oscillation and pulsed combustion type fracturing device. It is a powder column string made up by using two igniter columns and several main powder-charged columns and making them be overlapped together. Every igniter column and main powder-charged column are characterized by respectively adopting cylindrical powder column made up by adopting solid propellant containing ammonium perchlorate oxidant and polysulfide rubber combustion agent, on said igniter columns and main powder-charged columns are set axial central holes and radial through holes which are mutually communicated, in the lower end portion of igniter column an electric igniter is set.

The invention relates to the technical field of beneficiation, in particular to an extremely low content magnetite beneficiation method and system for associated phosphate minerals. The method provided by the invention comprises the step of carrying out multi-stage sorting, namely finely grinding raw ore, carrying out dry separation on ore fines, carrying out superfine crushing by adopting a high-pressure grinding roller, then carrying out dry separation on middlings, and carrying out dry separation by adopting a V-shaped powder selecting machine and a dynamic powder selecting machine, so thatiron core concentrate and tailings are separated, the next wet type grinding and separation treatment capacity is reduced, grinding and separation energy consumption is reduced, water resource is saved, wetting tailing amount is reduced, and beneficiation cost is effectively reduced.

The invention relates to a green Chinese onion nutrient precision management method which includes the steps: 1) determining green Chinese onion yield response coefficient; 2) determining the target yield of a planting plot according to local past green Chinese onion yield; 3) determining yield response (t / ha)=the yield response coefficient*the target yield (t / ha); 4) calculating optimal green Chinese onion nutrient quantity according to the target yield, yield response and agricultural efficiency; 5) determining a fertilization management method according to soil nutrient supply grades and the optimal green Chinese onion nutrient quantity. Nutrient input quantity is precisely calculated according to the target yield of green Chinese onions, a nutrient management method is refined according to production conditions, nutrient precision management for green Chinese onion production can be realized, improper nutrient input and application are avoided, the yield and the quality of the green Chinese onions are improved, the income of farmers is increased, and the yield and efficiency are increased.

The invention relates to an animal feed, in particular to a lick brick which is used to maintain the nutrient balance and health of the Tibetan sheep during the low temperature and low oxygen content of the Tibet plateau. The lick brick comprises the following components: molasses, urea, salt, corn flour, calcium hydrogen phosphate, bentonite, oligosaccharide, ferrous sulfate, potassium iodide, sodium selenite, vitamin A and vitamin D. The lick brick can be used to solve the problems that the plant coarse protein content and the ash content are low in the Qinghai-Tibet area, the mineral elements in soil are not balance and the content of soluble salt is low, thus the situation that Tibetan sheep are lack of nutrient elements owning to imbalance digestion can be improved, the constitution and the growth and development condition are improved, the retention-fat effect can be realized in winter and spring, and the capability of resisting natural disasters, especially the snow disaster can be increased.

The invention provides a method and system for recycling sec-butyl acetate in sec-butyl acetate preparation by-product heavy hydrocarbons having the carbon number of 12 or more; the method comprises the steps: under azeotropic rectification conditions, water and the heavy hydrocarbons having the carbon number of 12 or more enter an sec-butyl acetate recycling tower and are subjected to azeotropic rectification, an azeotrope of water and sec-butyl acetate is obtained from the tower top, a mixture of C12-C16 hydrocarbons and a part of water is obtained from the tower bottom, and the content of water entering the sec-butyl acetate recycling tower is 1.1-10 times that of sec-butyl acetate obtained from the tower top in the azeotropic form; the azeotrope of the tower top is condensed and then subjected to oil-water separation, and an aqueous phase product and an oil phase product containing sec-butyl acetate are obtained; and the bottom tower mixture of the C12-C16 hydrocarbons and the water is discharged and cooled and then subjected to oil-water separation, and an aqueous product and a C12-C16 hydrocarbon oil phase product are obtained. The method has the advantages of low requirements on a heat source, low energy consumption, and high yield, the amount of the by-product heavy hydrocarbons having the carbon number of 12 or more is reduced, the sales pressure is relieved, at the same time, the yield of sec-butyl acetate is increased, and the purposes of increasing production and efficiency are realized.

The invention relates to a micro-ridging, mulching and sowing method for dry-land corn of cold and cool zones. The method has the aims that mulching film covering simultaneously plays a role in micro rainwater collection, soil moisture preservation and temperature increase and the utilization ratio of hydrothermal resources is increased. The method provided by the invention comprises the steps: (1) carrying out soil preparation: deeply plowing at autumn, and harrowing and leveling to preserve soil moisture at the mudding period of thawed soil at early spring; (2) forming micro ridges, wherein faces of the ridges are semi-circular arc-shaped, the width of the bottoms of the ridges is 50cm, the spacing of the ridges is 70cm, the ridging spacing is 120cm, and the height of the ridges is 5-7cm; (3) ditching to fertilize: ditching two rows of fertilization ditches in the outer side of each sowing row, putting a fertilizer in the fertilization ditches in a strip sowing manner, and separating seed fertilizer from seeds; (4) mulching: mulching the ridges and about-15cm-width places of the two sides of the ridges with agricultural polyethylene films; (5) sowing: carrying out rush-early-planting while the soil is damp by using mudding water of soil when the daily average temperature in spring is stably above 7 DEG C or the temperature of 5cm soil layers below ridge side films is stably above 7 DEG C and the field moisture capacity of soil plough layers reaches over 60%; (6) covering sown rows with soil in time, wherein the thickness of covering soil is 2-3cm; (7) pressing, and preserving and raising soil moisture.