86 results about "Granoblastic" patented technology

The invention relates to a method for preparing high-purity quartz sand iron ore concentrate from magnetite associated granular quartz. The method comprises the following steps of, grinding and screening granular quartz, returning oversize products for regrinding, and carrying out gravity separation on undersize products to remove heavy minerals; carrying out medium magnetism and strong magnetismon the gravity separation fine sand to obtain magnetic minerals and non-magnetic quartz minerals; removing fine particles and mud of quartz through grading and desliming, taking graded fine sand as anelectrical and electronic grade silica micropowder raw material, and removing non-quartz particles of graded settled sand through flotation; carrying out "calcination, water quenching, acid leaching,cleaning and drying" on the flotation fine sand to obtain the high-purity quartz sand; carrying out ball milling and magnetic separation on gravity separation tailings and magnetic separation magnetic minerals to obtain high-grade iron ore concentrate; and using tailing mud and tailing sand generated in the ore dressing process as a novel building material raw material. According to the method, comprehensive utilization of resources can be achieved, and good economic, social and environment-friendly benefits are achieved.

The invention belongs to the technical field of laboratory mechanical rock breaking, and particularly relates to a laboratory three-dimensional dynamic rock breaking test system and method. The laboratory three-dimensional dynamic rock breaking test system comprises a host, a functional device, an electro-hydraulic servo axial loading system, a measurement control system, a computer control and data processing system and the like, and is reasonable in structure. The test system and method are simple and convenient to operate, can be used for simulating mechanical property test research of crushing of natural rocks, artificial concrete and granular compaction and consolidation test pieces under the condition of high stress of various dynamic loads such as impact and mechanical tunneling; according to the test system, a conventional mechanical experiment and a rock breaking experiment under the dynamic confining pressure condition can be achieved, and loading of an axial (3000KN) static pressure actuator and loading of an axial (25KN) servo actuator do not affect each other; the rock breaking direction in the experiment is downward, rock debris generated by rock breaking can automatically fall off, and the influence on stress, displacement and the like in the simulated rock breaking experiment is reduced; and real-time dynamic fracture positioning and damage parameters are obtained.

The invention disclose a piezoelectric ring excitation device for testing the granular material shear wave velocity and an indoor testing device. The piezoelectric ring excitation device comprises a piezoelectric ring (1), the inner side wall and the outer side wall of the piezoelectric ring (1) are both coated with epoxy resin (2), the interior of the piezoelectric ring (1) is filled with permeable stones (3), and the piezoelectric ring (1) is connected with data transmission cables (4) and a grounding wire (5). When the granular material shear wave velocity is tested, a pair of the piezoelectric ring excitation devices are installed on a base (6) and a top cap (7) respectively and serve as a shear wave excitation element and a receiving element, a sample (8) is arranged between the base (6) and the top cap (7), the base (6) is connected with a power amplifier (9) through one data transmission cable (4) and connected to a computer (10), and the top cap (7) is directly connected to the computer (10) through the other transmission cable (4). The piezoelectric ring excitation device adopts a radial deformation transmission shear wave, high precision is achieved, and a good testing means is provided for evaluating engineering characteristics of rock and soil materials.

A medium material for removing phenol contamination from groundwater, a method of producing the same, and use of the same id disclosed. In at least some embodiments, the medium material is a granular material which has an average particle diameter of 0.5-1.5 cm and is formed from a bacteria-entrapping solution, a manganese sand filter material, modified bentonite, and biochar at a mass ratio of 1:0.2-0.4:0.2-0.4:0.1-0.2 by a series of processes including strain culturing, catalysis, mixing, solidification, and the like. The medium material can remove phenol from groundwater, is a safe and environment-friendly material, has a long service life, and/or achieves waste treatment with waste.

The invention relates to a high-speed rotating shaping device, comprising a horizontal turntable, a conic body, an outer cover, a driving mechanism and a fixed bracket. The conic body is arranged above the horizontal turntable, a slant angle alpha is formed between the conic body and the horizontal plane, the highest point of bottom rotation of the conic body is as high as an upper edge of the horizontal turntable, and width of the upper edge of the horizontal turntable is k; the outer cover is arranged over the horizontal turntable and fixed through an external bracket, an inner side of the outer cover is provided with a rail, and the rail is butted with the upper edge of the horizontal turntable to form a granular material operation channel; an inlet of the rail is the highest point of the bottom rotation of the conic body; an outlet of the rail extends towards an external side of the upper edge of the horizontal turntable to form a rail spiral section, the conic body and the horizontal turntable are connected with the driving mechanism, and the driving mechanism is fixed on the fixed bracket. The high-speed rotating shaping device can sort and shape the flaky and granular materials at high speed, thereby greatly meeting the requirements on large-scale high-speed production of the flaky and granular materials in different sizes, and improving work efficiency.

A clumpable animal litter comprises composite particles of filler materials, such as limestone and sand, and sodium bentonite. The filler materials have a lower bulk density as compared to a granular mixture of the same percentage of filler and sodium bentonite clay and contain up to eighty-five percent less clay.

The invention discloses coal tar modified durable sulfur concrete and a preparation method thereof. Each cubic meter of the coal tar modified durable sulfur concrete comprises the following componentsby mass: 1080 kg of industrial sulfur particles; 600 kg of granular crushed stone; 72 kg of fly ash; 41 kg of granulated blast furnace slag; 342 kg of quartz sand; 29 kg of waste ceramic fine aggregate; 24 kg of waste glass micro powder; 36kg of stone chip powder; 36kg of volcanic ash; 65 kg of rubber particles; and 30kg of glass fiber; wherein the mass of the modifier is 1-5% of the mass of theindustrial sulfur particles; the mass of the thickening agent is 0.1-0.5% of the total mass of the sulfur concrete; and the mass of the coupling agent is 0.3-2% of the mass of the industrial sulfur particles. According to the invention, the durability problem caused by material embrittlement and volume shrinkage due to sulfur solid-phase transformation is solved, the cost problem that the traditional sulfur concrete is generally high in price is solved, and the problems that wastes occupy land and pollute the natural environment are also solved.

The invention relates to production of artificial quartz stones, in particular to an environmentally-friendly recovery device of the artificial quartz stones. The invention aims to provide the environmentally-friendly recovery device of the artificial quartz stones. In order to achieve the above aim, the environmentally-friendly recovery device of the artificial quartz stones comprises an outer frame, a control screen, a discharging platform, a material blocking plate, a sludge pump, a waste pushing and moving mechanism, a rotary waste granulation mechanism, a multi-layer filter plate mechanism and a waterfall type circulation collecting processing platform; the discharging platform is arranged at the bottom of the right side of the outer frame; the material blocking plate is arranged on the middle right side of the inner bottom of the outer frame; and the sludge pump is arranged on the right side of the bottom end of the outer frame. The environmentally-friendly recovery device of theartificial quartz stones can collect waste and polishing slurry of artificial quartz plates and greatly increases the utilization rate of the waste; and the prepared ceramsite-shaped waste has the characteristics of waterproofness and high hardness, has low loss during grinding and can adapt to grinding of materials with different particle size.

In the production of thermoplastic granulate material, after mixing the starting materials, it is common in the state of the art for these materials to be kneaded and compressed in extruders, with subsequent granulation. According to the invention, no extruder is used, rather the starting materials for the thermoplastic granulate material are supplied directly to a double belt press after the mixing. Subsequently, the generated web-type to sheet-type body is processed into a granulate material by means of grinding, or is used as a web-type, sheet-type, strip-type or film-type intermediate product for the production of a further intermediate product or end products.

This steel tube has: a base material part that comprises a tubular steel sheet; and a weld part that is provided at a joint part of the steel sheet and extends in the longitudinal direction of the steel sheet. The steel sheet has a prescribed chemical composition. The steel sheet satisfies ESSP=1.5 to 3.0 and Ceq=0.20 to 0.50. The metal structure of a surface layer part that goes to a depth of 1.0mm from the surface of the base material part is, by total area ratio, more than 80% granular bainite, acicular ferrite, tempered bainite, and/or tempered martensite. The surface layer part of the base material part has a maximum hardness Hvmax of at least 250 Hv and a yield ratio of at least 85%.

The present invention relates to a dynamic air classifier for the separation of granular and powdery materials into fractions of different grain sizes comprising a rotary cage, wherein: said classifier also comprises a recovery chamber for fine materials with a outlet bottom, said chamber being defined by a casing; said recovery chamber is coaxially arranged in the protrusion of the rotary cage so as to be able to use the vortex created by the rotary cage for cycloning said material; said recovery chamber comprises openings in the casing allowing the passage of the centrifuged material towards ducts for collecting the material located outside the chamber.

The invention discloses a refractory material for a surface layer of a precision casting wax mold. The material is prepared uniformly mixing, by mass, 75-85% of industrial aluminum oxide, 11-18% of vein quartz and 3-6% of zircon sand, smelting at 2100-2300 DEG C by adopting a three-phase star-shaped electric arc furnace, crushing and grinding. Due to reasonable design and proportioning, the main crystal phases comprise approximately granular corundum and mullite which is continuously distributed; the size of the corundum crystals is about 30-120 microns; besides the two main crystalline phases, a small amount of glass phase and a small amount of zirconium oxide are also included. Demolding is easy, adhesion is avoided, sand burning is little, and the finish degree of a precision casting product is guaranteed. The specific gravity is 3.10 g/cm<3>; the thermal conductivity is high, and the linear expansion coefficient is small and is 5*10<-6>; and deformation, cracks and cracking of theformwork are reduced.

The invention relates to a method for preparing granular artificial pumice stone by taking black shale as a raw material. According to the method, the natural black shale is taken as an ore raw material and any other reagents are not added, and the method comprises the following steps: 1) crushing the ore raw material to -20mm by adopting a crushing device; 2) sieving crushed ore to obtain a material with the particle size of 3mm-20mm by adopting a sieving device; 3) heating the sieved material to 240 DEG C-800 DEG C by adopting a calcining and heating device and the heating rate of 10 DEG C/min-20 DEG C/min in an air environment, and performing heat preservation for 12-30min; 4) heating the material after preheating and heat preservation to 1100 DEG C-1250 DEG C by adopting the heating rate of 10 DEG C/min-20 DEG C/min in the air environment and performing heat preservation for 15-30min; 5) slowly cooling the calcined and expanded material to below 400 DEG C in the air environment; and 6) sieving the calcined, expanded and cooled material to the particle size of 5mm-25mm by adopting the sieving device, thereby obtaining the granular artificial pumice stone. The method provided by the invention has the advantages of obvious effects, good safety, simple process, easiness in popularization and application, a wide range of applications and significant social and economic benefits.

Animal litter comprising composite particles including powdered sodium bentonite and powdered activated carbon, agglomerated together into the composite particles, wherein the animal litter has a particle size distribution of 16/50 mesh (i.e., 300 μm to 1180 μm in size). The litter may include non-composite, granular clay particles (e.g., granular sodium bentonite) having the same particle size distribution (16/50 mesh). Such particle size characteristics significantly reduce dusting, without the need for a de-dusting agent, reduce clump depth and/or reduce clump width at the bottom of the clump (both acting to reduce risk of clumps sticking to the bottom of the litter box) and result in more efficient use of the litter in clumping (reduced clump weight) by increasing absorbency.

The invention relates to a ceramsite proppant production device, in particular to a ceramsite proppant bauxite treatment device. The technical problem to be solved by the invention is to provide the ceramsite proppant bauxite treatment device. The ceramsite proppant bauxite treatment device comprises a left bottom frame, a left bottom foot, a control display screen, a left top frame, a top partition plate, a bauxite block fragmentation mechanism, a crystal water separation mechanism, an iron oxide separation mechanism and a rolling mechanism, the left side of the bottom end of the left bottomframe is welded with the left bottom foot, and the control display screen is arranged in the middle of the left end of the left bottom frame. According to the method, the effects of efficiently crushing the blocky bauxite, rapidly separating hydrated alumina crystal water in the bauxite, dry bauxite is obtained, bauxite fragments are granulated, granulated iron oxide impurities in the bauxite arerapidly separated by utilizing an electromagnetic force and the bauxite is uniformly rolled to obtain bauxite granular powder required by production are achieved.

The invention relates to a method for preparing sintered magnesia, in particular to a method for preparing sintered magnesia from granular magnesite by two steps, which can transfer heat from small-particle-size magnesite and discharge CO2 more quickly, and solves the problems of difficulty in heat transfer of large-particle magnesite used in light burning in a traditional reverberatory furnace and heavy burning in a shaft kiln, external temperature higher than internal temperature and high cost. The problems of low activity of light calcined magnesia, low density of dead burnt magnesia and the like caused by inconsistent decomposition and crystal form transformation degrees inside and outside the particles are solved, and the utilization rate of magnesite resources is increased. Especially, the problems of long calcining time and high re-calcining temperature in the traditional technology are solved. According to the method, the characteristics of high heat exchange rate, high yield,uniform particle heating and the like of the fluidized bed/moving bed are utilized, so that the sintering temperature is reduced, the sintering time is shortened, the treatment capacity of the systemis improved, the production cost of sintered magnesia is reduced, and two products, namely active magnesium oxide and sintered magnesia, can be simultaneously produced as required.