30results about How to "Improve carrier strength" patented technology

Chained terminals have a carrier (1) with opposite first and second side edges and terminal fittings (2) coupled to the first side edge of the carrier (1). The carrier (1) is formed with feed holes (6, 7) in correspondence with the respective terminal fittings (2). A widened portion (8) is provided along the first side edge of the carrier (1) and the feed holes (6, 7) are deviated towards the second side edge along the width direction. Thus, strength can be increased by as much as the carrier (1) is widened, and production efficiency can be increased by increasing a conveying speed.

Chained terminals have a carrier (1) with opposite first and second side edges and terminal fittings (2) coupled to the first side edge of the carrier (1). The carrier (1) is formed with feed holes (6, 7) in correspondence with the respective terminal fittings (2). A widened portion (8) is provided along the first side edge of the carrier (1) and the feed holes (6, 7) are deviated towards the second side edge along the width direction. Thus, strength can be increased by as much as the carrier (1) is widened, and production efficiency can be increased by increasing a conveying speed.

A panel having a panel upper side and a panel lower side and at least two opposing panel edges, which have each an edge break on the panel upper side, the edge breaks forming in the connected state a joint in a covering surface. The edge break of one of the panel edges is formed larger than the edge break of the opposing panel edge, and a lower part of the large edge break of the one panel edge is overlapped in the connected state by the small edge break of the opposing panel edge.

Object of the present invention is to provide a resin-coated carrier for an electrophotographic developer with reduced carrier weight, carrier beads carry over is prevented, and further, excellent in carrier strength and stable charging property in endurance printing. To achieve the object, the carrier having a coated resin layer on the surface of a porous ferrite core material and the pore volume and the peak pore size of the porous ferrite core material are 55 to 160 mm3 / g and 0.2 to 0.7 μm, respectively, and an electrophotographic developer using the resin-coated carrier is adopted.

The invention provides a construction method for a carrier pile. The construction method comprises the steps that 1, a pile casing is sunk into the set depth; 2, a heavy hammer is sunk into the pile casing, the clearance between the heavy hammer and the pile casing can form an airflow channel, and a cement mixture can smoothly pass the airflow channel; 3, material filling and heavy hammer tamping operation are simultaneously conducted, when the heavy hammer is upwards lifted, the bottom end of the heavy hammer does not leave an upper opening of the pile casing, and when the heavy hammer falls to conduct tamping, the bottom end of the heavy hammer is not knocked out of the pile casing so that low-falling-distance small-energy tamping can be ensured; 4, the step 3 is repeated to enable a pile end soil body to be reinforced and compacted; 5, the compactness is controlled through the three-strike penetration or the filler quantity standard, and a pile end carrier is formed; 6, cement paste or cement mortar is poured; and 7, cast-in-place constructing or prefabricating of a concrete pile body is conducted. The construction method for the carrier pile has the technical characteristics and advantages that 1, the tamping mode of the heavy hammer is changed; 2, material filling and heavy hammer tamping are simultaneously conducted by redesigning filler, the heavy hammer and the pile casing; 3, the component of the filler is changed, and the strength of the carrier is improved; and 4, the processes of material filling, tamping and compactness controlling are continuously completed.

The invention relates to water treatment filler in environmental protection field, in particular to a preparation method of degradable cellulose base filler used for water treatment. The preparation method is mainly as follows: fibers are prepared by technology of N-methyl morpholine-N-oxide, the mechanical property of the filler is improved further by the cross-linking and modifying technology, simultaneously, the surface of the filler is processed to load positive charge on the surface of the filler, so that the microorganism can adhere and grow on the surface of the filler conveniently. According to the invention, the method is simple and environment-friendly, the fibers prepared by the technology of N-methyl morpholine-N-oxide is good in mechanical property, and the prepared filler is large in superficial area, high in porosity, beneficial to protecting the growth of microorganisms, good in effect during the water treatment, and high in application value, and can not cause secondary pollution.

The invention discloses an industrial wastewater treatment method. A filtering pond is adopted for filtering; a plurality of water inlets and a plurality of water outlets of the filtering pond are provided with independent on-off valves and filter screens; the bottom of the filtering pond is composed of a plurality of flat plates capable of being overturned; a sludge tank is arranged below the bottom of the filtering pond and connected with a mud pump; after filtration, filtered wastewater is guided into an adsorption pond, and a composite adsorption material comprises a carrier and a functional component and is introduced into an ecological treatment pond comprising a filler layer and an aquatic plant layer. The unique filtering pond design is adopted, the filter screens are replaced while continuous filtering is achieved and the whole treatment process is not affected, treatment is convenient because of the sludge tank design, the components of the adsorption material are reasonably arranged, water absorption and ion adsorbing capacity are very high, a good adsorption effect is further guaranteed through ecologic treatment, and it is avoided that harmful components are leached out again after adsorption.

The invention discloses a method for preparing a hydrogenation catalyst. The preparation method of the hydrogenation catalyst of the present invention comprises: (1) impregnating molecular sieves with impregnation solution I containing Group VIII metal compounds, then drying and roasting to obtain modified molecular sieves; (2) preparing modified molecular sieves, pseudothin water Mix the bauxite precursor slurry and organic alcohol evenly to obtain slurry A; (3) add the silane coupling agent to slurry A and mix evenly, then adjust the pH value of the slurry to 7.5~11 to obtain slurry B; (4) combine the steps (3) The obtained slurry B is aged. After aging, the material is filtered to remove moisture, and organic amine and silane coupling agent are added to knead into a plastic body. After molding, drying and roasting, a composite carrier is obtained; (5) The hydrogenation catalyst is prepared by loading the group VIII metal and the group VIB metal on the composite carrier. The catalyst has very high hydrogenation performance, and is easy to desulfurize after hydrogenation and hydrogenation saturation of polycyclic aromatic hydrocarbons which are difficult to directly remove sulfides.

The invention discloses a preparation method of a composite carrier. The preparation method of the composite carrier of the present invention includes the following contents: (1) uniformly mixing pseudo-boehmite precursor slurry, molecular sieve and organic alcohol to obtain slurry A; (2) adding silane coupling agent to step (1 ) mixed evenly in the obtained slurry A, and then adjusted the pH value of the slurry to 7.5~11 to obtain the slurry B; (3) The slurry B obtained in step (2) was aged under a certain pressure, and after the aging was completed, the material was removed by filtration After a certain amount of water is added, organic amine and silane coupling agent are added to knead to form a plastic body, and after molding, drying and roasting, a composite carrier is obtained. In this method, molecular sieves are introduced during the growth process of alumina crystal nuclei, and a silane coupling agent is added. Through the hydrolysis of the silane coupling agent, the combination of alumina crystals and molecular sieves occurs in an orderly manner, avoiding the agglomeration of alumina and molecular sieves, and effectively controlling the carrier. pores and surface acid formation.

The invention discloses a natural gas demercuration adsorbent and a preparation method. The natural gas demercuration adsorbent comprises the following components in parts by mass: 82-95% of Al2O3, 4-12% of sulfur and 1-6% of copper sulfide. The preparation method comprises the following steps: (1) dipping Al2O3 in a sulfur solution; (2) soaking the product of the step (1) with a dissoluble copper solution; (3) exposing the product of the step (2) in a vulcanization environment for vulcanization; (4) washing with deionized water; (5) drying, thereby obtaining the natural gas demercuration adsorbent. The natural gas demercuration adsorbent prepared according to the preparation method disclosed by the invention is high in carrier strength, stable in specific surface, pore volume and pore size, high in demercuration speed, large in mercury capacity and small in use amount.

The invention discloses a modified alumina carrier, its preparation method and a hydrofining catalyst. Based on the weight of the modified alumina carrier, it includes molecular sieve, graphene and alumina, and has a specific surface area of ​​300-400m 2 / g, the pore volume is 0.5‑0.8cm 3 / g, the average pore size is 7‑9nm. The preparation method of the carrier is as follows: (1) Mix pseudo-boehmite precursor slurry, mesoporous molecular sieve, graphene and organic alcohol to obtain slurry A; (2) Add silane coupling agent to slurry A and mix evenly, Then adjust the pH value to obtain the slurry B; (3) Aging the slurry B. After the aging is over, the material is filtered to remove a certain amount of water, and then an organic amine and a silane coupling agent are added to knead into a plastic body. After molding, drying and roasting , to obtain a modified alumina carrier. The modified alumina carrier of the present invention has better adsorption capacity of hydrogen molecules and hydrogen overflow properties, and the hydrogenation refining catalyst prepared by the carrier is suitable for a liquid phase circulation hydrogenation process and has good hydrogenation activity.

The invention provides a construction method for a static pressure carrier pile. The construction method for the static pressure carrier pile includes the steps that firstly, an outer pipe is clasped by a clamping system of a static pile driver, and an inner pipe is sleeved with the outer pipe in an overlapped manner; secondly, the outer pipe is pressed by the designed depth in a static pressing manner; thirdly, the inner pipe is clasped by the clamping system; fourthly, the inner pipe is lifted up, a gap between the inner pipe and the outer pipe is filled with a fine particle packing material, the inner pipe is clasped, and the packing material is pressed downwards; fifthly, downward-pressing operation of the packing material is repeated till a carrier is formed at the bottom end of the pile, and the tip resistance pressure numerical value is observed; and sixthly, a cast-in-situ or embedded concrete pile body is manufactured. The other construction method for the static pressure carrier pipe includes the steps that firstly, sinking of a pile casing is conducted; secondly, a prefabricated pile body is clasped by the clamping system of the static pile driver and is sunk into the pile casing; thirdly, the prefabricated pile body is lifted up, a gap between the pile casing and the prefabricated pile body is filled with the fine particle packing material, the prefabricated pile body is clasped, and the packing material is pressed downwards; fourthly, downward-pressing operation of the packing material is repeated till the carrier is formed at the bottom end of the pile, and the tip resistance pressure numerical value is observed; and fifthly, the gap between the pile casing and the prefabricated pile body is filled with cement mortar, the pile casing is lifted out, and the pile is formed.

Disclosed are a resin-filled ferrite carrier core material for an electrophotographic developer, including a porous ferrite particle having an average compression strength of 100 mN or more and a coefficient of variation of the compression strength of 50% or less, a ferrite carrier obtained by filling a resin in the voids of the ferrite carrier core material, and an electrophotographic developer using the ferrite carrier.

The invention discloses a novel preparation method of p-fluoronitrobenzene, and relates to the field of organic synthesis. The method concretely comprises the following steps of firstly crushing durian shells; adding ethanol; performing ball milling to prepare durian shell powder; then, mixing the durian shell powder with urea; performing sintering treatment at a certain temperature to obtain mixed powder; adding the mixed powder into a tetrabutylammonium chloride solution for stirring and still standing treatment; then, performing drying to obtain a catalyst; adding reaction raw materials ofpara-nitrochloro-benzene, potassium fluoride and the catalyst into a reaction kettle; performing sealing; performing reaction at a certain temperature; after the reaction is completed, performing water washing and layering treatment; performing organic layer rectification to obtain a target product. The method disclosed by the invention has the advantages that the operation is simple; a solvent isnot used in the reaction process; the cost is effectively reduced; the product yield is high.