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415results about How to "Excellent performance" patented technology

Energy-saving and waste-utilizing concrete block or board and production method thereof

The invention belongs to the technical field of building materials, and particularly relates to an energy-saving and waste-utilizing concrete block or board and a production method thereof. The energy-saving and waste-utilizing concrete block or board is composed of desulfurization gypsum, slag powder, ultrafine fly ash, cement, foaming agent, alkaline excitant, early strength agent, water reducer, mineral fiber and triethanolamine. The desulfurization gypsum is cold-dried. By the energy-saving and waste-utilizing concrete block or board, industrial waste such as the desulfurization and the slag powder can be consumed in a large amount and turned into treasure, and environmental pressure caused by stacking of the waste can be relieved. In addition, steam conservation is adopted, strength development of concrete block and board is accelerated, and early strength is improved greatly, so that reuse of moulds can be quickened, conservation space is economized, and the energy-saving and waste-utilizing concrete block or board is suitable for industrial production. Foamed concrete block and board produced has fine performances of light weight, heat insulation, sound absorption, flame retardancy and the like. The energy-saving and waste-utilizing concrete block or board is applicable to projects such as roof insulation, wall insulation, road sound absorption and building sound insulation.
Owner:TONGJI UNIV

Iron tailing-based complex mineral admixture and preparation process thereof

InactiveCN103342491AExcellent performanceImprove pore structure
The invention relates to an iron tailing-based complex mineral admixture and a preparation process thereof. The preparation process comprises the following steps of: respectively drying iron tailing sand, industrial waste slag and limestone till water content is not more than 1% for later use; adding gypsum to match with iron tailings, the industrial waste slag and the limestone after drying, then sending into a ball grinding machine to perform powder grinding, and adding grinding aids during the powder grinding process; and uniformly mixing the obtained iron tailing powder, industrial waste slag powder and limestone powder to obtain the iron tailing-based complex mineral admixture. The iron tailing-based complex mineral admixture disclosed by the invention has the beneficial effects that 1) the iron tailings are matched with other industrial waste slag, the admixture for concrete is prepared by simple mechanical fine grinding, and the performance is better; 2) the performance is good, and the iron tailing-based complex mineral admixture can be used for preparing the concrete with the strength grade of C50-C80; 3) a variety of industrial wastes are scientifically and effectively compounded, the activity and particle size synergy of each component against cement and the concrete can be fully exerted to enable the advantages of all the components to complement each other, and the over-superimposed effect is further realized; and 4) the production process is simple and conductive to industrial production, popularization and application.
Owner:WUHAN UNIV OF TECH

Fiber reinforced thermoplastic composite material direct online pultrusion moulding device

A fiber reinforced thermoplastic composite material direct online pultrusion moulding device belongs to the technical field of composite material pultrusion moulding. The device provided by the invention comprises a yarn supply mechanism, a felt supply mechanism, a fiber braiding platform, a constant temperature stainless steel belt composite mechanism, a thermoplastic pultrusion moulding die anda traction mechanism, wherein the yarn supply mechanism/felt supply yarn cross mechanism is provided with a tension force yarn cross/tension force felt cross mechanism which can be used to tighten fiber yarn/fiber felt and convey the fiber yarn/fiber felt to a subsequent process; the tension force yarn cross/tension force felt cross mechanism is formed by a pre-stress damping shaft mechanism which is vertically arranged on the yarn supply mechanism/felt supply yarn cross mechanism and a connection wheel shaft which is configured corresponding to the pre-stress damping shaft mechanism. Variousreinforced materials can be selected and replaced according to need. One-group or multi-group short stainless steel conveyer belt composite and modularization composite structure can be adopted in the device. The number of fiber and molten polymer composite layers and the fiber configuration can be freely designed. The whole device has a simple structure, is flexibly arranged, requires low production cost, can be used for direct online processing, and is more energy saving and time saving.
Owner:SHANDONG GRAD GROUP +1

Ultralight ceramsite prepared by totally taking solid waste as raw material

The invention discloses ultralight ceramsite prepared by totally taking solid waste as a raw material. The requirements on the mass fraction, moisture content and particle size of the components of the adopted raw material based on 100 mass parts in total are as follows: clay iron tailing accounts for 40-45 parts, the moisture content is less than 5%, and the particle size: the weight of screen residue of a 0.08mm square hole sieve is less than or equal to 5%; coal gangue accounts for 42-49 parts, the moisture content is less than 5%, and the particle size: the weight of screen residue of a 0.08mm square hole sieve is less than or equal to 5%; and the dewatered sludge from a municipal sewage treatment plant accounts for 10-13 parts, the moisture content is less than 5%, and the particle size: the weight of screen residue of a 0.08mm square hole sieve is less than or equal to 5%. In the preparation process, the preheating temperature is 500-600 DEG C, the roasting temperature is 1,250-1,350 DEG C, and the heating rate is 10-15 DEG C per minute; and the bulk density of the prepared ultralight ceramsite is 390kg/m<3>, the cylinder compressive strength is 1.2MPa, the moisture absorption is 3.8%, the requirements of GB/T 17431.1-2010 are met, a new means for large-scale utilization of tailings, coal gangue and dewatered sludge is created, and the ultralight ceramsite brings remarkable economic, environmental and social benefits.
Owner:SINOSTEEL MAANSHAN INST OF MINING RES +1

Floating-point multiplier and floating-point multiplication for neural network processor

ActiveCN107291419AImprove working precisionExcellent performance
The present invention discloses a floating-point multipliers and floating-point multiplication for a neural network processor. The floating-point multiplier matches the mantissas of two to-be-multiplied operands to select different operation modes to obtain the mantissa of the product, and directly outputs the mantissa of one of the operands when the mantissas of the two operands match the upper four bits; when the mantissas of the two operands match the upper three bits, the partial bits of the mantissa of the two operands are first truncated, the high bit of the truncated numbers is complemented by one, and then the multiplication is performed and the result is output; and if the condition is not satisfied, the mantissas of these two operands are multiplied to obtain the mantissa of the product. According to the floating-point multiplier disclosed by the present invention, in the implementation of the multiplication operation, a combination manner of approximate calculation and accurate calculation is used, and data replacement, partial bit multiplication, and other work with lower energy loss are used, so that without sacrificing greater working precision, the working efficiency of the multiplication operation is improved, and neural network processing system performance can be more efficient.
Owner:INST OF COMPUTING TECHNOLOGY - CHINESE ACAD OF SCI
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