61results about How to "Economic and social benefit" patented technology

The present invention relates to a method for sorting and utilizing coal and rock for a coal and rock combined mining face, and is especially applicable to the sorting and utilization of coal and rock mined from a coal and rock combined mining face when an extremely thin coal seam is used as a protective layer in combined mining of multiple coal seams. Underground gangue transport, storage and filling systems are directly established underground to convey a large amount of coal and gangue mined from the coal and rock mining face to an underground sorting and washing chamber for efficient separation of the coal and the gangue, sorted gangue is crushed and then filled in a mined-out area of a protected layer, thus realizing the environment-friendly cut and fill mining of the protective layer while the gangue is not lifted, and effectively preventing the ground subsidence caused by combined mining of multiple coal seams; sorted middlings are conveyed to a gangue power plant on the ground for power generation through a main conveying system, so that the pressure on mine coal quality is alleviated when benefits are created in the power plant, and thus the average ash content of commercial coal is reduced, and the selling price is increased. The method provided by the invention realizes the efficient utilization of coal and rock while realizing the efficient separation of coal and gangue, and has remarkable economic and social benefits and excellent promotional value.

A phosphogypsum non-sintered ceramsite light aggregate composed of water and a mixture composed of phosphogypsum, mineral powder and cement. Raw materials of the mixture have weight percentages of phosphogypsum 80-90%, mineral powder 3.3-10%, cement 6.5-10%; the water has a weight of 17% of the total weight of the mixture. A method of preparing the phosphogypsum non-sintered ceramsite light aggregate. The phosphogypsum non-sintered ceramsite light aggregate is prepared by modification, granulation, curing, crushing, sieving and other processes by using phosphogypsum as a main material, cement as an alkaline activator, mineral powder as an active material.

The invention relates to a method to test friction resistance at inner and outer sidewalls of pipe pile through in-situ test. The method comprises embedding a strain sensor at inner or outer sidewalls of pipe pile to measure strain variation generating on pipe pile body under the action of load; carrying out static load test with the soil plug remaining in the pipe pile to obtain the strain variation ε_p1j,i of the pipe pile body at the i^th soil layer; taking out the soil plug remaining in the pipe pile and carrying out static load test to obtain the strain variation ε_p2j,i of the pipe pile body at the i^th soil layer; and obtaining the friction respectively at the outer and inner sidewalls of the pipe pile at the i^th soil layer according to the measured strain variation, ε_p1j,i and ε_p2j,i.

Disclosed is a method for producing a high-purity nanometer zinc oxide from electrolytic zinc acid leaching residues by ammonia decarburization. The method comprises: adding 0.3-0.5 kg of sodium fluorosilicate to per cubic meter of ammonia water-ammonium bicarbonate solution when leaching, and then adding 30-60 kg of slaked lime to per cubic meter of a leached solution for carrying out decarburization and refining treatment. The present invention obtained nanometer zinc oxide powder has purity of 99.7% or up, uniform particle size distribution (average particle size of 10-30 nm), specific surface area of 105 m²/g or up, good fluidity and good dispersity. The treatment method is characterized by low energy consumption and high efficiency; all valuable and harmful heavy metals in the electrolytic zinc acid leaching residues are leached out to be reasonably utilized and cleaned with water, so that the obtained final leached residues are converted from electrolytic zinc acid leaching residues as high hazard wastes into ordinary solid wastes. It obtained good economic benefit and social benefit.

A system and a method for automatically collecting opinions are provided. The method for automatically collecting opinions according to the present invention comprises the steps of: distributing, to user terminals, content containing actual metadata corresponding to metadata items required for executing an opinion-collecting service program; and extracting opinions of users contained in the reply content received from user terminals, and compiling statistics with the extracted opinions. The present invention enables an automatic online collection of user opinions regarding voting, public opinion polls, surveys and other feedback via PCs or portable communication equipment, and automatically compiles statistics with the collected user opinions.

A water resistant enhanced wound healing film includes components by mass volume concentration of: 5-10 mg/L of ultra-fine eggshell powder, 50-500 mg/L of ultramicroshell membrane powder or shell membrane soluble protein, 5-30 mg/L of lysozyme, 5-10 mg/L of chitosan, 0.05-5 mg/L of glycerin, and 0.1-5 mg/L of polymer polysaccharide. Also, a preparation method of the water resistant enhanced wound healing film is disclosed. The whole raw materials of the present invention are non-toxic and have good biocompatibility; the raw materials include eggshell, shell membrane and soluble mixed protein thereof, and lysozyme in residual egg white. In the present invention, various components of the eggshell waste are sufficiently used. The wound healing film has good water resistance, mechanical properties, antibacterial activity and protein absorption capacity, and low degradation rate. The method of the present invention has simple process, strong practicability, extremely low production cost, favorable resource recycling and low energy consumption.

A database-based system is provided for performing an opinion collecting service that provides information necessary for deciding and presenting opinions of users and collecting information containing the opinions of the users. The system consists of a server, a plurality of user terminals connected to the server over a network, and a database configured to store information containing the opinions of the users. The database for the system is designed with three different phases: 1) conceptual design of a survey database; 2) logical/physical design for the survey database; and 3) construction of the survey database.

Provided is a micropitting corrosion resistant industrial gear lubricant composition, comprising: (A) at least a highly refined mineral oil, or synthetic oil or any combination of the above components; (B) at least a micropitting corrosion resistant additive; (C) at least an anti-wear additive; (D) at least a metal passivation additive; and (E) at least an anti-oxidation additive.

The lubricant composition has excellent high and low temperature performance and meets 68, 100, 150, 220, 320, 460 and 680 industrial gear oil viscosity level requirement. The lubricant composition has excellent micropitting corrosion resistance, anti-wear performance and anti-oxidation performance, passes FVA 54 micropitting corrosion resistant test, FAG FE-8 bearing wear test and SKF EMCOR bearing corrosion test, and is suitable for many large-scale industrial transmission gears and some automobile transmission gears, especially suitable for a gear transmission system for wind power generation.

The invention relates to a device for soft soil foundation treatment by vacuum-membrane-free vacuum preloading and a treatment method. The device comprises includes several top plates for being laid on the surface of soft soil foundation and several vertical plates for being vertically driven into the soft soil foundation, wherein the vertical plates are driven against the symmetrical side edges of the top plates; the vertical plate has an inner chamber, the top surface of the vertical plate is provided with a vertical plate main-hole in communication with the inner chamber of the vertical plate, both sides of the vertical plate are provided with several vertical plate vacuum mini-holes in communication with the inner chamber of the vertical plate; the vertical plate main-hole is in communication with vacuum equipment. The invention is applicable to applicable to the field of geotechnical engineering techniques.

The invention discloses a sleeve-type coal material decomposition apparatus which includes a kiln body. The inside of said kiln body is set with coal material decomposition-promoting layers and circular heating layers centered on the axis of kiln body; the said circular coal material decomposition-promoting layers and circular heating layers are isolated from each other; both ends of the said circular coal material decomposition-promoting layer are respectively connected to the coal inlet and coal outlet on kiln body and are also connected to the decomposition gas collecting mechanism on kiln body. The coal material decomposition-promoting layers and circular heating layers are isolated from each other, which is helpful for the acquisition of pure coal decomposition gas. The heat released from circular heating layers is fully absorbed by adjacent set coal material decomposition-promoting layers via conduction and radiation forms; the full absorption of pulverized coal brings better effect of complete decomposition.

The invention discloses a coal decomposition method and equipment in cycle heating gas style. The coal decomposition equipment can avoid introducing impurity, ensure a pure decomposed gas and keep continuous heating without extrinsic heat source, which includes an airtight kiln body with coal inlet and coal outlet; a facility for impelling and decomposing coal set in the kiln body; a coal decomposed gas collecting pipe set in one end of the airtight kiln body, and a high temperature gas input pipe set in the other end of the airtight kiln body; wherein the coal decomposed gas collecting pipe is connected with a post-processing facility and communicates with the high temperature gas input pipe through a circle pipe, and the circle pipe and/or the high temperature gas input pipe comprises a heating device.