37results about How to "Improve ball milling effect" patented technology

The invention relates to the technical field of battery materials, and particularly relates to a preparation method and application of hard carbon. The preparation method provided by the invention comprises the steps of carrying out salt leaching on biomass waste powder to obtain salt-leached biomass waste powder; and sequentially carrying out first carbonization, ball milling and second carbonization on the salt-leached biomass waste powder to obtain the hard carbon. According to the method, firstly, the biomass waste powder is subjected to salt leaching to enable the biomass waste powder tocarry salt ions, and the salt ions can change the microstructure of carbon in the subsequent second carbonization process, so that the performance of hard carbon is influenced; the two-step carbonization process is used for ensuring that a primary carbon structure can be formed and tar substances in the biomass can be removed through first carbonization, so that the relative controllability of thesize of biomass waste powder in the subsequent ball milling process is facilitated, and the formation of a more stable carbon structure can be ensured through second carbonization.

The invention discloses a ceramic raw material ball mill. The ceramic raw material ball mill comprises a base, a ball mill cylinder and a feeding mechanism. A stand column is vertically installed on one side of the base. A motor mounting seat is mounted on the other side of the base. A motor is mounted on the motor mounting seat. A large transmission wheel is arranged on one side of the motor. A motor shaft of the motor is connected with the large transmission wheel. A bearing is fixedly mounted on one side of the ball mill cylinder. A small transmission wheel is mounted at the end of the bearing. The large transmission wheel is connected with the small transmission wheel through a belt. A feeding opening is formed in the upper portion of the ball mill cylinder, and a discharging opening is formed in the lower portion of the ball mill cylinder. A feeding hopper is arranged above the feeding opening. The feeding structure is arranged on one side of the base. The ceramic raw material ball mill further comprises a cooling mechanism. The cooling mechanism is arranged outside the ball milling cylinder. The ceramic raw material ball mill is simple in structural principle and high in degree of automation and can achieve uniform ball milling of ceramic raw materials and improve subsequent processing efficiency; and in addition, the cooling mechanism can achieve uniform cooling of the surface of the ball mill cylinder and prevent deformation caused by uneven temperature.

The invention is applicable to the field of ceramic processing, and provides a continuous ball mill for ceramics, the ball mill comprises: a treatment device, the treatment device comprises a treatment tank, the transverse reciprocating motion of the treatment tank is adjusted through a push-pull mechanism, the vertical rotation of the treatment tank is adjusted through a rotating mechanism, and the treatment tank is arranged in the treatment device; the push-pull mechanism is linked with the rotating mechanism; a plurality of steel balls are arranged in the treatment tank; the device further comprises a feeding device. When the ball mill provided by the embodiment of the invention is used, as linkage exists between the transverse reciprocating motion and the vertical rotation of the treatment tank relative to the supporting sleeve, when the treatment tank rotates relative to the supporting sleeve, the plurality of steel balls grind and crush materials in the treatment tank, and meanwhile, the materials in the treatment tank are separated from the supporting sleeve. According to the processing tank which transversely reciprocates relative to the supporting sleeve, the feeding port can be intermittently aligned with the discharging port, so that the effect of periodically adding materials into the processing tank is achieved, and the continuity of adding the materials into the processing tank is guaranteed.

The invention discloses a horizontal type multistage rolling ball grinder. The horizontal type multistage rolling ball grinder comprises an inner ball grinding barrel, a feeding barrel, a rolling ballgrinding barrel body and an outer ball grinding barrel, wherein the inner ball grinding barrel is arranged in the outer ball grinding barrel; the feeding barrel is welded at one end of the inner ballgrinding barrel; a plurality of stirring bars are welded on a rotating shaft arranged in the inner ball grinding barrel; a primary ball grinding cavity is formed in the inner ball grinding barrel; aplurality of grinding balls are put in the primary ball grinding cavity; the rolling ball grinding barrel body is arranged between the inner ball grinding barrel and the outer ball grinding barrel; aninner ball grinding cavity is formed between the rolling ball grinding barrel body and the inner ball grinding barrel; a plurality of inner grinding balls are arranged in the inner ball grinding cavity; an outer ball grinding cavity is formed between the rolling ball grinding barrel body and the outer ball grinding barrel; and a plurality of outer grinding balls are arranged in the outer ball grinding cavity. The horizontal type multistage rolling ball grinder has the beneficial effects that the plurality of grinding balls are used for impacting materials to carry out primary ball grinding treatment; the inner grinding balls are used for secondary ball grinding treatment; the outer ball grinding cavity is used for secondary ball grinding treatment; the ball grinding effect is good; the time of ball grinding is shortened; the materials with uniform particle sizes are obtained; and the sieving and separation of the materials subjected to ball grinding are facilitated.

The invention discloses a ball-milling all-in-one machine for automatically grinding and screening manganese metal, and relates to the field of ball mills. The ball-milling all-in-one machine comprises a mounting base, a fixing frame, a ball-milling cylinder and a screening groove, the ball-milling cylinder and the screening groove are both located in the fixing frame, the two ends of the ball-milling cylinder are connected with the fixing frame through a fixing shaft and a feeding port respectively, and a vibration assembly is arranged in the fixing frame. Through the arrangement of the vibration assembly, when the fixing frame linearly moves left and right, the screening groove can shake left and right, metal manganese powder obtained after ball milling can be effectively screened, and after a connecting shaft rotates, a second driving bevel gear drives a second driven bevel gear to rotate, and a rotating shaft rotates, so that an eccentric wheel rotates; the screening groove can be pressed when the eccentric wheel rotates, then the screening groove inclines leftwards and rightwards in a reciprocating manner under the cooperation of a spring, then the metal manganese powder shakes in the screening groove, so that the screening effect of the metal manganese powder is further improved, and the screening efficiency is improved.

A planetary ball grinder is composed of drive motor, transmission gear train, revolving mainshaft and rotary disc, multiple rotational axles and the ball grinding cylinders rotating around own axle. It features that said ball grinding cylinder is eccentrically installed in such manner that the central line of rotational axle is parallel with the geometric central line of the cross-section of ball grinding cylinder, and its eccentrical degree can be changed for changing the ratio of grinding action to impact action.

The invention discloses material ball milling apparatus, which comprises a cylinder. Two ends of the cylinder are provided with a material inlet and a material outlet. A first partition plate and a second partition plate are arranged in the cylinder. The first partition plate and the second partition plate are both provided with a filter hole. The diameter of the filter hole of the first partitionplate is greater than that of the filter hole of the second partition plate. The first partition plate and the second partition plate divide the cylinder into a first cylinder, a second cylinder, anda third cylinder. The inner walls of the first cylinder, the second cylinder, and the third cylinder are all provided with a wear resistant lining plate. The lining plates of the first cylinder and the second cylinder are both provided with embossments. Steel balls for grinding are placed in the first cylinder, the second cylinder, and the third cylinder. The steel balls in the first cylinder arein a cylindrical shape. The upper end and bottom end of each cylindrical ball body are connected to an arc end. The surfaces of steel balls in the second cylinder are provided with multiple embossments. The ball milling apparatus has the advantages of good ball milling effect and short ball milling time, moreover, the service life of lining plates is prolonged, and the ball milling apparatus is suitable for the preparation of nano level silicon powder.

The invention discloses a graphene nanosheet-based toughened aluminum oxide-titanium boride composite ceramic material and a preparation method thereof, belongs to the field of cutter materials, and aims to solve the technical problem of how to further improve the fracture toughness and antifriction and antiwear properties of a ceramic composite material in a high-speed cutting process. Accordingto the technical scheme, the graphene nanosheet-based toughened aluminum oxide titanium boride composite ceramic material is mainly prepared from, by weight, 70-80 parts of submicron aluminum oxide, 20-30 parts of titanium boride, 0-0.6 part of graphene and 0.4-1.5 parts of a sintering aid. The graphene nanosheet-based toughened aluminum oxide titanium boride composite ceramic material is used forpreparing cutters. The invention also discloses a preparation method of the graphene nanosheet-based toughened aluminum oxide-titanium boride composite ceramic material.

The invention provides a ball mill for producing firework aluminum powder. The ball mill comprises a barrel body, a shaft and a support frame, wherein the barrel body is erected on the supporting frame through a shaft, a feeding opening is formed in one end of the barrel body, and a discharging opening is formed in the other end of the barrel body; a coarse grinding chamber, a middle grinding chamber and a fine grinding chamber are sequentially arranged in the barrel body, and every two of the coarse grinding chamber, the middle grinding chamber and the fine grinding chamber are separated through a mesh screen; and a stirring device is further arranged in the barrel body, and the stirring device comprises a transverse stirring blade arranged on the inner wall of the barrel body and a stirring plate arranged on the shaft. According to the ball mill, the ball milling efficiency of the ball mill is effectively improved, ball milling is carried out simultaneously in various ways, and the ball milling quality is effectively improved. Meanwhile, energy loss is reduced, the firework aluminum powder which is ball-milled through the ball mill is used for manufacturing fireworks, the setting-off effect of the fireworks is effectively improved, and the pollution to the environment is reduced.

The invention discloses a lead-free piezoelectric ceramic consisting of B-bit compound Bi-based compounds and a preparation method thereof. The general formula of the lead-free piezoelectric ceramic is shown in (1-x-y)Bi(Li1 / 2Me1 / 2)O[3-x]BaTiO[3-y](K1 / 2Bi1 / 2)TiO[3+z]MaOb, wherein x, y and z refer to mole fractions, x is larger than 0 and less than 1.0, y is larger than 0 and less than 0.1, z is larger than or equal to 0 and less than or equal to 0.1; Me is one or more pentavalent metallic elements, and MaOb is one or more oxides, and M is monovalent to hexavalent elements and can form a solid oxide with oxygen; and the lead-free piezoelectric ceramic is prepared by using a conventional ceramic preparation method. A prepared lead-free piezoelectric ceramic has good sintering properties, is simple and stable in preparation process and good in performance, and can partially replace a traditional lead-based piezoelectric ceramic.

The invention provides a vacuum ball mill for preparation of aluminum powder for fireworks. The vacuum ball mill comprises a barrel-shaped mill body, a mounting seat and a driving motor, concentric shafts are arranged at the two ends of the mill body correspondingly and mounted and fixed on the mounting seat through a bearing, a pulley is arranged at one end of the mill body and connected to the driving motor through a belt, a through hole communicating within the mill body is formed in each concentric shaft, and the concentric shafts comprises the left concentric shaft and the right concentric shaft; and meanwhile, the through hole is formed by corresponding to the corresponding concentric shaft, the through holes comprises the left through hole and the right through hole, an observationwindow is arranged in the left through hole, and the right through hole is connected to a vacuum pump through a pipe. The scheme of the vacuum ball mill effectively improves the efficiency and qualityof aluminum raw material production, effectively improves the convenience of operation, can effectively prevent oxidation of pulp after ball milling, effectively reduces the loss of energy, and facilitates batch production.

The invention discloses a double-layer ball milling equipment for high-purity quartz sand processing in the technical field of high-purity quartz sand processing, which includes a base, an outer cylinder, an inner cylinder and a storage box. The inner cylinder is connected with the outer cylinder, the storage box is connected with a feeding pipe, and a sealing assembly is arranged in the feeding pipe, and the sealing assembly is connected with the rotating wheel on the inner cylinder correspondingly. Quartz sand is ball milled for the first time, and enters the outer cylinder through the sieve hole, and intermittent feeding is realized through the rotating wheel and sealing assembly at the same time; the outer cylinder is reciprocally swayed by the rotating disc and rotating rod, and the quartz sand is subjected to secondary grinding; through the electromagnet Disconnect the connecting shaft from the rotating rod, turn the outer cylinder to the bottom of the screen to facilitate unloading, and reconnect the connecting shaft to the corresponding rotating rod, so that the outer cylinder can swing and drive the quartz sand to move on the screen, improving Filter the output effect.

The invention relates to a method for preparing tetrabasic lead sulfate, which comprises the following steps: A. Prepare the reaction, send the pre-mixed lead material into the reaction kettle, and carry out internal circulation stirring while adding sulfuric acid solution into the reaction kettle After uniformity, feed compressed air into the reaction kettle to cool the lead slime; B. Ball milling reaction, transport the lead slime in step A to a drying ball milling device, and perform drying and ball milling simultaneously to obtain a tetrabasic lead sulfate product. The present invention adopts the method of directly reacting the premixed lead material with sulfuric acid, makes full use of the heat generated by the exothermic reaction of concentrated sulfuric acid to rapidly heat up the reactor, thereby shortening the preparation reaction time, and the reaction product is rapidly cooled by compressed air, further Effectively inhibit the 4BS crystal particles from becoming larger, and the formed 4BS has a small and uniform particle size, which effectively solves the problem in the prior art that the reaction product crystal particles are large and uneven due to the high reaction temperature and long reaction time for the preparation of tetrabasic lead sulfate. technical problem.

The invention relates to a high-energy ball mill technique, in particular a plasma-assistant high-energy ball mill device. The device is made by modification based on the traditional planet ball miller. The electrode shaft is secured on the can lid by an electrode seal ring, is connected movably with an electrode clamping frame by an electrode bear. The electrode clamping frame for claming the electrode shaft is mounted movably on one end of the planetary plate center shaft. The electrode clamping frame connects with an electrode spindle with a bearing pore at one end. The electrode spindle connects with the anode of the power source, and the cabinet connects with the cathode of the power source and is grounded. The invented technique introduces plasma into the planet ball miller, enhances the ball milling speed with a narrow distribution of particle size, and improves ball mill efficiency at the same time. The invented device is provided with a reliable and reasonable structure, and is easy to be produced. The application and popularization of the plasma-assistant high-energy ball mill technique in nano commercial scale production are promoted.

The invention discloses a process for processing amniotic membrane gel freeze-dried powder. The powder-making process includes the following steps: (1) setting a temperature-controlled ball mill in a ball mill; (2) selecting high-wear-resistant ball mills; (3) mixing a refrigerant Add the agent into the low-temperature circulator, and then add the stirring rotor to make the circulation temperature ‑30~‑40℃; (4) Adjust the ball milling speed of the ball mill to 1800‑2000rpm / min; Substances are continuously frozen and ball-milled for 10-15mins under the conditions of ‑30~‑40℃ to obtain powders that meet the required particle size specifications. The advantages of the present invention lie in: optimizing the existing pulverizing process by adjusting the temperature of the low temperature circulator, the rotating speed of the ball mill and the ball milling time in the pulverizing process, so that the prepared corresponding powder retains the original characteristics and has better comprehensive performance.

The invention discloses an unleaded piezoelectric ceramic consisting of a B-site composite Bi-based compound and a preparation method thereof. The components of the unleaded piezoelectric ceramic are shown by the general formulae of (1-x) Bi (Li1 / 2Me1 / 2) O3 - xBaTiO3 + zMaOb, (1-x) Bi (Li1 / 2Me1 / 2)O3 - x (Na1 / 2Bi1 / 2)TiO3 + zMaOb, (1-x-y) Bi (Li1 / 2Me1 / 2) O3 - xBaTiO3 - y (Na1 / 2Bi1 / 2) TiO3 + zMaOb, (1-x-y) Bi (Li1 / 2Me1 / 2) O3 - xBaTiO3 - y (K1 / 2Bi1 / 2) TiO3, + zMaOb or (1-x-y-v) Bi (Li1 / 2Me1 / 2) O3 - xBaTiO3 - y (Na1 / 2Bi1 / 2) TiO3 - v(K1 / 2Bi1 / 2) TiO3 + zMaOb, wherein x, y, z and v denote mole fractions, 0 (x (1.0,0 (y (1,0 (v (1, 0< / = z< / =0.1, Me represents one or five pentavalent metallic elements, MaOb represents one or a plurality of oxides, M is an element of +1 to +6 valence, and can be formed into a solid oxide with oxygen, and the ceramic is prepared in a conventional ceramic preparation method. The prepared unleaded piezoelectric ceramic has a good sintering characteristic, the preparation process is simple and stable, the performance is excellent, and the unleaded piezoelectric ceramic can partially replace the conventional lead based piezoelectric ceramic to be used.