32 results about "Pugmill" patented technology

A hot mix asphalt plant for producing hot mix asphalt using a high percentage of RAP comprising a first dryer adapted to receive and mix virgin aggregates and RAP fines and a first burner assembly adapted to produce a burner flame and heat and dry the virgin aggregates in the first dryer. The plant also includes a second dryer adapted to receive coarse RAP and a second burner assembly adapted to produce a burner flame and heat and dry the coarse RAP in the second dryer. The plant further comprises a pugmill adapted to receive the virgin aggregates and the RAP fines from the first dryer and the coarse RAP from the second dryer and mix the virgin aggregates, the RAP fines and the coarse RAP to produce hot mix asphalt. The method of the invention includes the steps of providing first dryer, a first burner, a second dryer, and a second burner, conveying the virgin aggregates to the first dryer, heating and drying the virgin aggregates in the first dryer, conveying the RAP fines to the first dryer, mixing the virgin aggregates and the RAP fines in the first dryer, conveying the coarse RAP to the second dryer, heating and drying the coarse RAP in the second dryer, and mixing the coarse RAP, the RAP fines and the virgin aggregates to produce hot mix asphalt.

The invention belongs to the technical field of building materials, and provides a method for preparing an environment-friendly ceramic plain brick by sediment of the Yellow River. The method is characterized by comprising the following: 1) a step of blank preparation, in which, the sediment of the Yellow River is dug up from riverbed, and is deposited for more than 10 years to be deposited sediment of the Yellow River; the blank comprises the following compositions in weight percentage: 60 to 80 percent of the deposited sediment of the Yellow River, 5 to 10 percent of pulverized fuel ash, 5 to 10 percent of coal refuse, 5 to 10 percent of fluxing agent, and 5 to 10 percent of grog refractory; the compositions are selected for standby; water is added to the mixture for mixing and stirring, wherein the amount of the water is 20 to 22 percent of gross weight of the deposited sediment of the Yellow River, the pulverized fuel ash, the coal refuse, the fluxing agent and the grog refractory; mud is milled by a vacuum pugmill, and is cut into mud cakes; after the mud cakes are aged for 3 days, the blank is produced for standby; 2) a step of glaze preparation; 3) a step of shaping; 4) a step of glazing; 5) a step of drying; and 6) a step of maturing, thereby producing the environment-friendly ceramic plain brick with water content ratio of between 6 and 8 weight percent. The plain brick prepared by the method has the characteristics of high regularity, high strength and strong decoration, and can be directly used for walls bricklaying without external decorating.

The invention relates to a honeycomb heat accumulator made of silicon carbide-corundum composite materials, which comprises the following main raw materials: 20-30wt% of silicon carbide powder, 4-8wt% of zirconia corundum powder, 20-30wt% of corundum powder, 15-20wt% of porzite powder, 15-30wt% of composition of kyanite, andalusite and sillimanite, 4-8wt% of kaolin and 2-5wt% of cellulose powder. The preparation method of the honeycomb heat accumulator comprises the following steps: adding the main raw materials into a ball mill for ball milling; adding stearic acid of which the weight is not greater than 1% of the total weight of the main raw materials for ball milling, and then, sieving to obtain a mixture; respectively adding tung oil of which the weight is not greater than 1% of the weight of the mixture and glycerol of which the weight is not greater than 1% of the weight of the mixture for mixing, aging and vacuum pugmill to form pug segments; carrying out extrusion forming in a mold, and drying; and insulating at the temperature of 1400-1450 DEG C for 4-8 hours, and then, calcining. The honeycomb heat accumulator of the invention has the characteristics of high fire resistance, good thermal shock resistance, strong corrosion resistance, large heat exchange area, small gas flow resistance, high heat accumulating efficiency, small floor space and long service life which can be more than two years, and is widely used for heat accumulating type heating furnaces of black and non-ferrous smelting, thermal power generation, petrochemical industry, ceramics, glass, machining, civil cookers and the like.

The invention discloses a zirconia honeycomb ceramic body which comprises the raw materials as follows: ceramic raw material, alpha-Al2O3 powder, clay, Mgo, organic cellulose, a binder and ZrO2 powder. The raw materials are mixed evenly by weight percentage and then the binder and moderate amount of water are added, and ball milling, mixed milling and staleness are carried out to prepare pug; the pug is put into a vacuum pugmill for pug milling, and then extrusion molding wet honeycomb ceramic body is put into a far-infrared kiln for drying and shaping into a dry blank; the honeycomb ceramic body is calcined at 1500 DEG C to 1700 DEG C and then cooled and taken out from the kiln. The zirconia honeycomb ceramic body is not only applicable to be used under high temperature environment being over 1500 DEG C in a heating kiln; besides, the heat exchange of the heating kiln is fast and even, thus saving the fuel of the regenerative heating kiln by about 40 percent to 70 percent, promoting yield by more than 15 percent, reducing the emission of NOX gas to be lower than 100ppm and resulting in lower than 150 DEG C gas emission temperature; therefore, the zirconia honeycomb ceramic body greatly improves the burning effect of the regenerative heating kiln, saves fuel and energy, reduces the emission of harmful gases, prolongs the service life of the regenerative heating kiln, improves environment and promotes both economic and social benefits.

A remediation system comprises a primary scalping screen, a primary pump and sump, a large diameter maximum density separator with flocculant injection ring, a secondary pump and sump, a small diameter maximum density separator with flocculant injection ring, a static sieve screen, a flocculation sump, a vibrating screen, a dewatering device, a tertiary sump and pump, a secondary flocculation tank, and a pugmill. Screens move water and particulates through the components. In this manner larger particles are separated from smaller particles and the particles are further dewatered.

A drag box for use in applying cold mix asphalt paving material to a surface is provided. The drag box includes a pugmill for distributing the cold mix over the surface, a strike blade for shearing the asphalt mixture to a desired thickness, cylinders for raising and lowering the strike blade in response to elevational changes in the surface, at least one signal generator associated with each cylinder and adapted to produce a signal indicative of the elevation of the surface, and at least one signal receiver associated with each signal generator. The drag box is pulled behind a prime mover but preferably is not rigidly coupled with the prime mover. The blade is raised and lowered in response to signals emanating from the generator as the elevation of the surface changes, allowing surface level variations to be evened out while paving.

The invention discloses a method for preparing a bending-free piezoelectric ceramic fiber with a low cost. The method comprises the following steps of: fully and uniformly stirring one or two of polyvinyl alcohol, polyvinyl pyrrolidone and cellulose acetate serving as adhesives, water serving as a solvent and lead zirconate titanate series powder with a grain diameter of smaller than 1 micron serving as a raw material, degassing the mixture under the negative pressure of between 10<-2> and 10<-3> Pa or degassing the mixture in a vacuum pugmill to form a briquette; putting the briquette into a melt spinning machine for spinning, straightening the spun briquette and drying the straightened briquette in the air to form a continuous fiber, and cutting the continuous fiber into short fiber briquettes with lengths of between 100 and 350 millimeters; pyrolyzing the fiber briquettes in a muffle furnace at the temperature of 550 DEG C for 1 hour, raising the temperature to 85 to 900 DEG C at a speed of 5 DEG C per minute, preserving the heat for 2 hours and cooling the fiber briquettes; and hanging pre-burnt fiber briquettes in an aperture formed between two square corundum strips in a corundum crucible, raising the temperature to a needed temperature at the speed of 5 DEG C per minute and preserving the heat for about 90 minutes to obtain the ceramic fiber. The method has low cost; the prepared ceramic fiber is bending-free; and the sintered ceramic fiber has low porosity, good uniformity and good piezoelectric property.

A portable system and method for processing waste to be solidified and placed in an active cell of a landfill. A portable pugmill is moveable adjacent an active cell of a landfill; and portable devices, which may be mounted on sleds or trailers, may be used for feeding the pugmill with waste to be solidified into a landfill-ready state. The waste may be fed to the pugmill without the need for long-term waste storage devices, and avoiding substantial delays between discharge of the waste from trucks to the pugmill-feeding steps.

The invention discloses a making process of an efficient flat ceramic membrane. The making process includes: making a flat ceramic membrane supporting body; preparing the efficient flat ceramic membrane, wherein nano-silver is added during preparation of the efficient flat ceramic membrane. The making process has the advantages that by adding the nano-silver, the efficient flat ceramic membrane has disinfecting and sterilizing effects, thereby having better filtering effect; through pug milling in a vacuum pugmill, influence of gravity on materials can be eliminated to sufficiently mix the materials, so that uniformizing of the materials at all positions of pug is facilitated, and the made flat ceramic membrane supporting body is high in quality; by using alumina as a main raw material for sintering to prepare the flat ceramic membrane supporting body, performance stability of the ceramic membrane supporting body can be improved, and enough strength of the supporting body can be ensured while light weight is realized.

The invention relates to a hollow flat plate whole ceramic filtering membrane element. The prepared filtering membrane element has the sterilization and disinfection effects through the addition of nanometer silver, so that the filtering effect of the filtering membrane element is higher. Through the mud milling in a vacuum pugmill, the influence of gravity on the materials can be eliminated, so that the materials can be sufficiently and uniformly mixed; therefore the materials in each position of the mud materials can favorably become uniform; a prepared flat plate ceramic membrane support body has high quality; by using aluminum oxide as a major raw materials for preparing the flat plate ceramic membrane support body through sintering, the performance stability of the ceramic membrane support body can be improved; the support body is enabled to have sufficient intensity on the premise of light weight.

The invention discloses a coal ash poly-light brick. The coal ash poly-light brick is manufactured from the following raw materials in percentage: 50%-60% of coal ash, 30%-40% of clay, 7%-8% of gangue powder, 1%-2% of polystyrene and 0.5%-1.5% of saw dust. A manufacturing process of the coal ash poly-light brick comprises the following steps of: (1) weighing coal ash, clay, gangue powder, polystyrene and saw dust by the proportion of the raw materials; (2) fully mixing and stirring the weighed materials to form clods; (3) putting the clods into a pugmill to mould the clods by extrusion; (4) delivering the rolled blank body to a chain type drying kiln and drying at 100-150 DEG C so that the water content of the blank body is lower than 2%-6%; (5) delivering the dried blank body to a tunnel kiln, calcining the blank body at a high temperature of 1200-1300 DEG C for 38-42 minutes, and drying the blank body by the afterheat generated after calcining; and (6) cutting and grinding the calcined blank body to form a finished product. The coal ash poly-light brick disclosed by the invention is energy-saving and environment-friendly and has a low heat conduction coefficient and good thermal shock stability.

The invention discloses a making method for a pure natural green ceramic product. The method includes: adopting dry red rock mud and pottery clay as raw materials, putting the raw materials into a ball mill and adding water to conduct ball-milling together to obtain pottery mud, putting the pottery mud into a pugmill to perform pugging so as to obtain wet pottery mud, then putting the wet pottery mud into a fermentation chamber to carry out fermentation in a natural temperature environment so as to obtain a ceramic product raw material, making the prepared ceramic product raw material into a semi-finished product of a ceramic craft or ceramic product by a manual or machine-made way, then putting the semi-finished product into a drying room to perform baking, and then putting the product into a kiln to conduct firing and cooling, thus obtaining the finished product of the pure natural green ceramic craft or ceramic product. The method provided by the invention no only has the advantage of low making cost, but also has the advantages that the product has natural tone and can keep the pure natural characteristics of ceramic products.

The invention discloses a ceramic pugmill. The ceramic pugmill comprises a motor, stirring shafts, a stirring drum, a screen and a baffle, wherein an inner cavity of the stirring drum is divided into two left and right parallel stirring cavities by a clapboard; a feeding hole is formed in the upper part of the front end of one stirring cavity and a discharge hole is formed in the lower part of the front end of the other stirring cavity; a discharge valve is arranged at the discharge hole; the front end of the clapboard is connected with the baffle and the rear end of the clapboard is connected with the screen; the stirring shafts are arranged in the two stirring cavities respectively; the fronts of the two stirring shafts extend out of the stirring drum and are connected by two gears meshed with each other; the front end of one stirring shaft is also connected with the motor. The ceramic pugmill has the advantages and characteristics that the ceramic pugmill is simple and is convenient to use; the stirring drum is divided into two parallel stirring cavities, so that the pugmill has a shorter body and double strokes, can mill pugs circularly and has high pug milling efficiency.

The invention discloses cloud porcelain production equipment and a technical method of the cloud porcelain production equipment. The cloud porcelain production equipment is characterized in that a cloud porcelain clay feeding device is installed between a cloud porcelain pug kneading box and an original color pug conical roller and provided with a cloud porcelain pug auger, pug with more than one color is stirred through the cloud porcelain pug kneading box and then stirred and mixed with original color pug after the original color pug is mixed and stirred, then the mixed pug is stirred through a multi-color pug auger to obtain the cloud-type porcelain clay serving as the pug used for manufacturing porcelain such as tableware and tea ware. The production technical method includes the steps of pug preparing, ball milling, extrusion mixing, coarse pugging, extruding, forming, fettling, glazing, firing and packaging. According to pugging machines, a pugmill is machined and modified and provided with the cloud porcelain clay feeding device and the cloud porcelain clay auger, and an original color pug conical end cover is further provided with a vacuumizing pipe. The porcelain clay product obtained through stirring and extruding of the multi-color pug auger is fine in quality, diverse in color, high in aesthetic feeling, has natural beauty and is a colorful porcelain product with the natural beauty.

The invention discloses a method for preparing ceramics capable of repeatedly storing heat. The method is characterized in that titanium oxide black blue powder and pottery clay are weighed according to a weight percentage, raw materials are injected into a ball mill after being mixed, and are ground after water is added; well ground slurry subsides; supernatant liquid is pumped out after subsiding, precipitates are taken out to be placed on the clean ground to be dried in the sun; the dried soil is placed into a pugmill to be pugged, and the air in the soil is discharged. Well pugged mud is made into corresponding green bodies and is dried, and the dried green bodies are put into a fire ceramic body to be calcined, and a ceramic product which can repeatedly store heat can be obtained after natural cooling. The ceramic product capable of repeatedly storing heat is placed in an illumination position, titanium oxide can be converted into lambda-titanium oxide, can store heat, and is converted into beta-titanium oxide to release heat under definite conditions, then the beta-titanium oxide is converted into lambada-titanium oxide after the ceramic product is heated, and the ceramic product can continuous to absorb and store heat.

The invention relates to the technical field of ceramic product production and processing and in particular relates to a ceramic pugmill. The ceramic pugmill comprises a feed box, wherein a first rolling shaft is arranged in the feed box; a filter device is arranged in the feed box body behind the first rolling shaft and comprises a plurality of screen plates, slots and extension holes; the slots are formed in one side of the side wall of the feed box; the extension holes are formed in the other side of the feed box; screen holes are formed in the screen plates; a cross rod is arranged on one side of each screen plate; the thickness of each cross rod is equal to the width of a slot body of each slot, so that the cross rods can be matched and clamped with the slots into a whole; a handle is arranged on the other side of each screen plate. The ceramic pugmill has the beneficial effects that the two ends of the screen plates are erected on the feed box body via the slots and the extension holes, so that the screen plates can be conveniently taken out from the feed box to be washed or changed; meanwhile, the screen plates with different screen hole sizes can be used aiming at different milled pug quality requirements, thus meeting the production requirement of multiple purposes of one machine.

The invention discloses a vacuum pugmill, and relates to the field of ceramic manufacturing. After two pug milling cavities are set to be at different vacuum degrees for pug milling, pug is stirred through a third stirrer arranged in a third pug milling cavity. Particles of the pug obtained by means of mechanical pug milling are in directional alignment, stresses are concealed in the pug, and the stresses can be released in high-temperature firing to influence manufacturing of ceramics. The vacuum pugmill is provided with the third pug milling cavity, the third stirrer in the third pug milling cavity is used for stirring the pug which leaks into the third pug milling cavity after being stirred in the first pug milling cavity and the second pug milling cavity in the way that the turning directions of an inner circle and an outer circle are different, the vacuum degrees inside the two pug milling cavities are different, then random stirring by the third stirrer in different directions is conducted, and the obtained pug particles are irregularly arranged. The vacuum pugmill is simple in structure and suitable for industrial processing of pottery, and the obtained pug gets closer to pug obtained by means of manual pug milling.