489 results about "Mining industry" patented technology

Accurately measuring the payload weight of dump trucks, especially off highway trucks, is important to efficient operation of most applications, such as in the mining industry. An under-loaded truck decreases efficiency in a known manner. In addition, over-loading a truck can decrease efficiency in the long run by such things as shortening truck component life due to excessive wear, such as on the drive train. The present invention seeks a more accurate payload measurement by positioning the dump body between its travel position and its dumping position. In the payload measuring position, the dump body is supported at four points, which are preferably pins equipped with shear strain gauges. After measuring the payload weight, the dump body is returned to its travel position for transport.

The invention relates to an electrodialysis-efficient evaporation method for treating mining and metallurgy waste water membrane filtrating concentrate, belongs to the technical field of environment protection and especially relates to treatment of heavy metal contained waste water membrane concentrate from metallurgy and mining industry. The invention has technical characteristics that membrane concentrate from advanced treatment of mining and metallurgy heavy metal contained waste water is collected and enters to an electrodialysis system for further condensation treatment; when reaching a certain condensation multiple, the membrane concentrate enters an efficient evaporation system for treatment. Fresh water generated from electrodialysis and efficient evaporation is collected for reuse or discharge, and generated crystal solid is used for resource integrated utilization or retreatment. The technology is conveniently operated and energy saving, has no environmental pollution, low treatment cost and wide application prospect, and can realize zero discharge of membrane treated strong brine containing heavy metals, so as to truly reach zero discharge of membrane treated waste water containing heavy metals.

The invention relates to a tungsten alloy composite coating material and a manufacture method. The tungsten alloy composite coating material is a multi-phase composite structure material composed of a tungsten alloy and a large number of particles or fibers dispersed in the tungsten alloy. The tungsten alloy composite coating contains tungsten of 5 to 98wt% and particles or fibers of 0.05 to 80wt%, and the diameter of the particle or the fiber is 3nm to 5 micrometer. The coating has low internal stress, excellent normal-temperature and high-temperature hardness and abrasion resistance, excellent high-temperature oxidization resistance and excellent corrosion resistance. The tungsten alloy composite coating has important use in machinery industry, chemical and medicine industry, metallurgy industry, aerospace industry, weapons and ammunitions, petroleum exploitation, mining industry, electronic industry, etc, and is particularly suitable for the occasions with high-temperature strength and high corrosion resistance.

The invention relates to a method for evaluating the porosity of mud shale at an objective layer segment, and belongs to the technical field of exploration and development of petroleum, geology and mining industry. The method can be used for evaluating the total porosity, the organic porosity and the inorganic porosity of the mud shale at the objective layer segment in a shale gas well. The method comprises the following steps: (1) determining the mass of various ingredients in a mud shale sample skeleton in unit mass at each depth point of the objective layer segment and the density of each dried sample block body and calculating the total porosity of the mud shale in all the depth points via the combination of the actual density of various minerals; (2) calculating the organic porosity (Phi organic') formed by the hydrocarbon generation of the mud shale at the objective layer segment by utilizing chemical kinetics; (3) seeking a solution of the organic porosity (Phi organic) according to scanning electron micrographs of multiple argon ion polishing samples in the same depth point; (4) calibrating the organic porosity (Phi organic') calculated according to the chemical kinetics by utilizing the organic porosity (Phi organic); and (5) seeking a solution of the inorganic porosity by utilizing a difference value of the total porosity and the calibrated organic porosity.

A correlative evaluation of a sample using an x-ray computed tomography (CT) x-ray fluorescence (XRF) system and the method for analyzing a sample using x-ray CT and XRF is disclosed. The CT/XRF system includes an x-ray CT subsystem for acquisition of volume information and a confocal XRF subsystem for acquisition of elemental composition information. The CT/XRF system also includes a controller for managing the acquisitions by the x-ray CT subsystem and confocal XRF subsystem. Combining sub-micrometer spatial resolution 3-D imaging with elemental composition analysis in 3-D with ppm level sensitivity is important to elemental identification of precious metal grains in crushed and ground ores and floatation tailings in the mining industry.

The invention provides chitosan-based double-network hydrogel. The hydrogel is of a double-network structure. A first network is chitosan graft hydrogel, and the chitosan graft hydrogel is formed by chitosan liquid, an initiator, a first single body and a cross-linking agent through grafting reaction. A second network is inserted inside the first network, and the second network is hydrogel which is formed by polymerization of a second single body, a cross-linking agent and a photo-initiator under the radiation of ultraviolet light and has high compression strength and tensile strength. Due to the introduction of chitosan, the biocompatibility of the hydrogel is improved. Thus, application of the double-network hydrogel in the fields such as biological medicine, the construction industry, the chemical industry and the mining industry is improved. The invention further provides a preparation method for preparing the chitosan-based double-network hydrogel. The method is simple in technology and enables industrialization to be easy.

The invention provides graphene oxide/chitosan grafted type double-network hydrogel. The graphene oxide/chitosan grafted type double-network hydrogel is of a double-network structure, wherein the first network is graphene oxide/chitosan grafted hydrogel which is formed by a graphene oxide solution, a chitosan solution, an initiator, a first monomer and a cross-linking agent through grafting reaction, the second network is inserted in the first network in a penetrating mode, and the second network is hydrogel which is formed by a second monomer, a cross-linking agent and a photo-initiator through polymerization under ultraviolet irradiation. The graphene oxide/chitosan grafted type double-network hydrogel has high compression strength and tensile strength. Due to the fact that the chitosan is introduced, biocompatibility of the hydrogel is improved, and then the double-network hydrogel can be better applied to the fields of biological medicine, construction industry, chemical industry, mining industry and the like. The invention further provides a preparation method for preparing the graphene oxide/chitosan grafted type double-network hydrogel. The method is simple in process, and industrialization can be easily achieved.

The invention relates to a method for preparing di-dithiocarbamate modified chitosan beads. The method comprises the following steps of: after dissolving 5 g of chitosan in an acetic acid solution at first, solidifying the chitosan in a sodium hydroxide solution to form chitosan beads with the diameter of 2-3 mm, wherein the solidifying time is 8-26 h; and, after carrying out Shiff alkali reaction, etherification, amination and elimination of benzaldehyde of the chitosan beads, grafting carbon disulfide under an alkaline condition to obtain di-dithiocarbamate modified chitosan. Compared with the original chitosan, the chitosan disclosed by the invention as a water treatment agent has stronger adsorption property and can be applied to treatment of heavy metal ions in wastewater, such as electroplating wastewater, battery wastewater, wastewater in mining industries and the like; the adsorption selectivity of the chitosan is increased; furthermore, the chitosan can be recycled for many times; and the purpose of rationally utilizing resources is achieved.

The invention relates to a fiber grating sensor, in particular to a fiber grating liquid flow sensor with temperature compensation or for eliminating the influence of temperature change on a measurement value. The sensor has high data acquisition precision and long service life, can work under the environment of high temperature (over 300 DEG C) and high pressure (over 40MPa) and acquire effective data, and is not affected by the adverse conditions of electric field, magnetic field, explosiveness, flammability and the like; the service life of the sensor is nearly semi-permanent; and the sensor has small volume, is easy to install, has high measurement precision, and can adapt to flow measurement of complex, layered and mixed layers. Particularly in the petroleum extraction process, the requirement of measurement of liquid yield is more prominent; and particularly, the sensor can be applied in the places where the temperature sensors of other forms are not competent, and particularly has great application prospect in the fields of nuclear power plants, oil fields, spaceflight, chemical industry, mining industry, energy conservation, emission reduction and the like.

The invention relates to a method for preparing dithiocarbamate-based modified porous starch. The method comprises the steps that: using starch as the raw material; carrying out enzymolysis on the starch for 1 to 26 hours under the condition that the pH is between 4 and 6 and the temperature is between 30 and 60 DEG C by a complex enzyme consisting of a saccharifying enzyme and an alpha-amylase; drying the obtained product to prepare porous starch; and after carrying out crosslinking, etherification and aminating modification on the porous starch, grafting the product with carbon disulfide under the alkaling conndition to obtain the dithiocarbamate-based modified porous starch. Compared with the conventional porous starch, the dithiocarbamate-based modified porous starch of the invention has strong absorption characteristic and high adsorptive selectivity. When the adsorption effect is reduced, the dithiocarbamate-based modified porous starch is taken out and immersed in 2mol.L-1 of HNO3 solution to carry out desorption, the desorption ratio is over 90 percent, and the absorption effect is not reduced by repeated desorption. The invention has commendable economic and social benefits, and can be used for treatment of heavy metal ions in waste water in galvanization, battery and mining industries and the like.

The invention discloses an electrochemical deposition method for preparing a super-hydrophobic and super-oleophilic surface, and belongs to the technical field of function materials. The method comprises the following steps of: forming a micro/nano-structured silver film on the surface of a copper or copper alloy substrate by electrochemical deposition, and modifying by using 12-hydroxy stearic acid to obtain a surface with super-hydrophobicity and super-oleophilicity. The contact angle of the super-hydrophobic and super-oleophilic surface prepared by the method to water is 154 to 159 degrees, the rolling angle of the surface is less than 5 degrees, the contact angle of the surface to oil is 0 to 5 degrees, and the surface has a good hydrophobic effect and a high oleophylic speed; and the film has uniform thickness and is difficult to fall, the property of the film is kept basically unchanged after being placed in air for a long time, and the surface can be used for oil-water separation to purify water in oil, and has a wide application prospect in fields of mining industry, petrochemical industry, environmental protection industry and the like.

The invention proposes a treatment method for a heavy-metal-containing wastewater membrane concentrated liquid, relates to the technical field of environmental protection and particularly relates to the treatment of the heavy-metal-containing wastewater membrane concentrated liquid in metallurgy and mining industries. The treatment method comprises: after collecting the heavy-metal-containing wastewater membrane concentrated liquid, introducing into a membrane distillation system for recycling, and introducing the concentrated liquid to an efficient evaporation system when a certain concentration ratio is reached; and collecting fresh water generated by the membrane distillation system and efficient evaporation system for reuse, and comprehensively utilizing or retreating a produced crystalline solid. The treatment method provided by the invention is convenient for operation and energy-saving, and has the advantages of less environmental pollution, lower treatment cost and wide application prospects, the occupied space in the treatment method is small, and zero emission of the heavy-metal-containing wastewater membrane concentrated liquid can be realized, thus truly realizing the zero emission of the treatment of the heavy-metal-containing wastewater.

The invention provides a method for monitoring whole-process safe displacement of an underground surrounding rock, belonging to the technical field of mining industry and geotechnical engineering safety detection and monitoring. The method is characterized in that an ultrasonic displacement monitoring device (1), an infrared thermal imager (2), an underground master control computer (3) and an acousto-optic alarm device (4) are installed and connected on a travelling mechanism (5) to jointly form a whole-process safe displacement monitoring device; the ultrasonic displacement monitoring device (1), the infrared thermal imager (2) and the underground master control computer (3) are connected to carry out real-time recording and analysis on the monitored surrounding rock displacement and infrared thermal image or temperature; the underground master control computer (3) is connected and communicates with the acousto-optic alarm device (4); and the travelling mechanism (5) ensures that the displacement monitoring device reaches the predetermined position. The method has the advantages of simplicity and convenience in displacement monitoring and operation, high safety, high degree of automation, no damage, real-time and reliable monitored data, wide application range and the like.

A system 100 is described for the treatment of multiphase residues having unlimited content of water, oil and solids to obtain hydrocarbons and other products, said system comprising multiphase residue feed system 10, inert gas system 20 and reduced pressure system 30, tubular reactor 40 provided with three heating zones Z-1, Z-2 and Z-3 with a temperature gradient and transportation helicoid 42 to displace the residue mass throughout the reaction zones, the hydrocarbon products and water being collected in a system 60 of condensers 61, 62 and 63 linked to a system 70 of bubbling vessels 71, 72 and 73, reactor 40 being operated in the sealed mode and being provided with a multiphase residue inlet 43 and exit 44 of solid product. The solid product is collected in a system 50 comprising upper valve 51 and lower valve 52, and intermediate silo 53 and then directed to post-treatment system 90 for activation aiming at industrial utilization. The process using the system 100 of the invention is also described. Multiphase organic residues, petroleum residues, pure or in admixture in any amount, from chemical and pharmaceutical industries, paper and pulp industry, and mining industries can be processed in the inventive system. Besides, it is possible to recover phenols from foundry sands in the system and process described.

The invention provides a novel high-power LED lamp bulb which is combined together by a plug composed of high-conductivity terminals and a plastic body and a glass shade which mainly adopts an LED as the light-emitting unit, takes the thermal design of a base plate and a circuit board into consideration and improves the luminous efficiency. The heat-dissipating base plate is connected with the circuit board by adhesive paste, and a conventional LED group or a novel LED group is arranged thereon. The glass shade with high refractive index is arranged outside the base plate. One end of the base plate is connected with the plug via the circuit of the circuit board, and is further connected with an external power source via the plug. The novel high-power LED lamp bulb adopts the reflecting mirror in the original lamp to conduct the primary reflection or the multiple reflections without changing the load-bearing design of the original lamp, and realizes excellent performances, such as low energy consumption, high brightness and safety, without changing illumination requirements for various lighting fittings. The novel high-power LED lamp bulb is widely applied in vehicle industry, mining industry, research and rescue, street illumination, playground illumination, commercial illumination and general indoor illumination.

The invention belongs to the technical field of ore beneficiation in metallurgical mining industry, and particularly relates to a sorting method of multi-metal lean hematite. The sorting method is characterized by employing a two-stage continuous grinding, magnetic separation, reverse flotation, grinding aging and centrifuge sorting method to separate the iron minerals and other metallic minerals, and comprises the following steps of: carrying out ball milling for the first time and classification for the first time, classification for the second time, ball milling for the second time, first-stage weak magnetic separation, first-stage strong magnetic roughing, first-stage strong magnetic selection, reverse flotation sorting, second-stage magnetic separation, grinding again, centrifuge roughing and centrifuge selection on the multi-metal symbiotic lean hematite, combining the weak magnetic separation concentrate and centrifuge concentrate to obtain final concentrate, and combining second-stage strong magnetic separation tailings, reverse flotation tailings and centrifuge tailings to obtain final tailings. After the introduction of the novel new sorting method, the grade of the raw ore is 30.505%, the grade of the obtained concentrate increases to 64.14% from about 58% and the yield is 28.59%, the recovery rate is 60.13%, and the grade of the tailings is 17.03%.

The invention belongs to the field of land evaluations, and provides an improved mining industry derelict land reclamation appropriateness fuzzy synthetic evaluation method. The improved mining industry derelict land reclamation appropriateness fuzzy synthetic evaluation method comprises the step of establishing an evaluation index system, the step of determining evaluation index weights, the step of dividing evaluation units based on a mining industry waste map spot extracted from a remote sensing image, the step of determining the evaluation unit dividing sequence according to the evaluation index weights and data obtaining precision of the evaluation index weights, and the step of constantly adjusting the dividing line to enable the evaluation unit shapes and the areas to facilitate production practice to finally obtain the evaluation unit meeting the requirement according to the proportion of the index values of the evaluation indexes in the mining industry derelict land map spot grid area. In addition, the evaluation indexes are divided into a quantitative evaluation index and a qualitative evaluation index, different subjection functions are established for different types of evaluation indexes, and a reclamation appropriateness grade for a specific purpose is obtained. The improved mining industry derelict land reclamation appropriateness fuzzy synthetic evaluation method has the advantages that the evaluation result is more objective and accurate, the workload is low and the evaluation method can directly serve for production practical.

A helical drag bit provided with spirally/helically positioned cutting arms. The arms can create a spiral trench geometry in the sidewall of a predrilled pilot hole. The cutting arms can terminate in scoring cutting blades. The helical drag bit can be incorporated into a system and method for measuring geo-tech characteristics. The helical drag bit can be used in a system and method for improving the holding capacity of rock bolts and similar devices for use in the mining industry or in any circumstances where a particulate substrate may benefit from support. Novel rock bolts having new structures can be used with this improved hole geometry or may form such improved hole geometry.

The invention relates to a ventilation system and a ventilation method for tunnel construction. The system consists of a wind turbine, an air exhaust vertical shaft, a jet flow tee joint, an exhaust duct, a filter connection tee joint, a fresh air duct, a tee joint purification foundation, a separation air duct, a fan, and a fresh air filter; a ventilation vertical shaft is constructed outside a tunnel before construction, and during construction, air feeding is adopted on an upper part, and exhausted air on a lower part is directly filtered and removed; a fresh air machine can drive fresh air and exhausted air synchronously, wind energy is fully utilized, and energy is saved and emission is reduced; and the system can be industrially designed, and produced in the standardized, generalized and serialized mode, can be widely applied to tunnel construction industry, mining industry, dust operation industry and other industry, and belongs to the field of tunnel construction and ventilation and purification.

The invention discloses a method for preparing an absorbing material based on modified konjac glucomannan. The method is characterized by comprising the following steps of: soaking konjac glucomannan in mixed solution of an organic small molecular swelling solvent and water, swelling for 2 to 24 hours, performing vacuum filtration, and washing a solid by using an organic small molecular solvent to remove residual moisture; and adding the swollen konjac glucomannan into a heterocyclic or aromatic derivative which is dissolved by the organic small molecular solvent and has lone electron pairs or/and free electrons, stirring and reacting for 1 to 72 hours in the presence of a catalyst at the temperature of between 50 and 120 DEG C, precipitating a material obtained after the reaction by using a precipitation solvent, filtering, and washing and drying a solid to obtain modified konjac glucomannan powder. In the method, the modified konjac glucomannan has the characteristic of absorbing heavy metal ions; and the absorbing material can be widely used for treating heavy metal ions, radioactive nuclide wastewater and the like produced by mining industry, chemical industry, nuclear industry and the like.

The invention provides a waterpower hole packer. The waterpower hole packer comprises a front hole packer, one or more middle hole packers and a rear hole packer; the rear end of the front hole packer is connected in series with the front end of the middle hole packer; the front end of the rear hole packer is connected in series with the rear end of the middle hole packer; and the front hole packer, the middle hole packer and the rear hole packer have the same structure and comprise expansion capsules and central pipes. By the waterpower hole packer, high-pressure hole packing of rock holes can be realized; the waterpower hole packer has the characteristics of no axial force, high hole-packing pressure, large friction force, high safety and simple structure, and can be widely applied to mining industries such as the coal mine and the like.

The invention belongs to the technical field of ore sorting and relates to an LIBS intelligent sorting apparatus for ore. The apparatus comprises an ore conveying device (1), a feed bin (2), a crusher (3), a vibrator feeder (4), a vibration launder (5), an LIBS sorting system (6), an ore separating mechanism (7), a concentrate catch trough (8) and a mine tailing catch trough. The invention further provides a method for intelligent sorting by using the apparatus. The invention has the following beneficial effects: a grade threshold for separation of a concentrate and mine tailings can be set according to demands of users and can be adjusted at any time in the process of screening, and establishment of a calibration curve does not need considerable ore as samples any longer; the grade of selected ore is increased, a great amount of waste stone is abandoned, processing cost of downstream procedures (processing, grinding and flotation) in the mining industry is substantially reduced, energy is saved, consumption is reduced, and cost of mine enterprises is substantially reduced.