37results about How to "Reduce the cost of sand making" patented technology

The invention relates to a high-frequency vibration casting mold of a conical sand maker rolling mortar wall and a casting process capable of achieving the effect of no shrinkage cavity and effectively improving the cast density during casting feeding of the conical sand maker rolling mortar wall. The high-frequency vibration casting mold is characterized in that a sand box is located on a high-frequency vibration platform; the height of a rolling mortar wall forming mold cavity in the sand box is smaller than the height of a casting riser or the volume of the forming mold cavity is smaller than the volume of the casting riser. The casting process comprises the following steps: casting high chromium cast iron into the rolling mortar wall forming mold cavity and the casting riser, then carrying out high-frequency vibration on the high-frequency vibration platform, and cooling to obtain the high chromium cast iron rolling mortar wall with a high density. The high-frequency casting mold and the casting process have the advantages that firstly, the wear resistance of the high chromium cast iron rolling mortar wall is effectively improved, and the sand making cost is greatly reduced; secondly, the feeding effect is good, the cast is high in density, and the occurrence of damage phenomenon is avoided; and thirdly, the wear resistance, the shock resistance and the service life are increased by nearly 5 times, and unexpected technical effects are achieved.

The invention discloses a machine-made sand production station and a sand making method. The machine-made sand production station comprises a steel structure framework, a vibrator feeder, a powder removal machine, a sand-making machine, a shaper, a screening machine and dust removal equipment, and adopts a novel layout manner as follows: the sand-making machine is arranged on the top of the steelstructure framework, the screening machine with high vibration is arranged at the bottom, and the screening machine is separated from the structure framework, so that vibration of the steel structureis reduced, the weight of the steel structure of the station is reduced on premise of ensuring the safety, and investment of the production station is reduced. Two sand-making machines are used for simultaneously making sand, and a novel manner of matching the shaper and two screening machines is adopted, so that the sand making efficiency is improved, the grains of finished sand are full and round and more regular. The powder removal machines are arranged at a feeding hole and a discharging hole of the shaper, and a two-stage powder removal process is adopted, so that stone powder content ofthe finished sand can be effectively controlled, and the quality of the finished sand is improved.

The invention relates to a casting mold of a conical sand maker breaking wall and a casting process capable of achieving the effect of no shrinkage cavity and effectively improving the cast density during casting feeding of the conical sand maker breaking wall. The casting mold is characterized in that the height of a breaking wall forming mold cavity in the sand box is smaller than the height of a casting riser or the volume of the forming mold cavity is smaller than the volume of the casting riser. The casting process comprises the following steps: casting high chromium cast iron into the breaking wall forming mold cavity and the casting riser, then suspending the sand box on a high-frequency vibration platform for high-frequency vibration, and cooling to obtain the high chromium cast iron breaking wall with a high density. The casting mold and the casting process have the advantages that firstly, the wear resistance of the high chromium cast iron breaking wall is effectively improved, and the sand making cost is greatly reduced; secondly, the feeding effect is good, the cast is high in density, and the occurrence of damage phenomenon is avoided; and thirdly, the wear resistance, the shock resistance and the service life are increased by nearly 5 times, and unexpected technical effects are achieved.

The invention discloses a dry sand making process, comprising the following procedures: crushing treatment, sieving treatment, coarse particle humidification treatment and standby dry sand treatment. The process integrates striking, milling and rocking by stones; meanwhile, stone-powder separation is achieved; kinetic energy required by a main engine is greatly reduced; the produced product is stable in grading, good in particle shape, and adjustable in fineness modulus; the overall process adopts a separation technique, so that energy conservation and environmental protection are achieved; the finished product is stable in grading, good in particle shape, and free of needle-like sand, and is a polyhedron, and is similar to a globoid shape; the fineness modulus (2.3-3.0) and the particle content (below 5%) are adjustable; all performance indexes accord with the 'standard of sand for construction' GB14684-2011; the processing cost per ton is saved by 60% in comparison with international and domestic similar products; the sand making cost is greatly reduced; and the crushing application range is wide.

The invention relates to a production line for producing sand, which comprises a feeding machine, sand producing machines, a sand washer and sedimentation tanks, wherein the number of the sand producing machines is N, and N is an integral number not less than 1; feed inlets are formed in the sand producing machines; the feed inlets comprise stone inlets and water inlets; the feeding machine is respectively connected with the feed inlets of the N sand producing machines; the feed inlets of the N sand producing machines are respectively connected with the sedimentation tanks through pipelines; discharge outlets of the N sand producing machines are respectively connected with the sand washer; the sand washer is connected with the sedimentation tanks through pipelines. According to the invention, a cyclically utilized production line is formed, on one hand, the sand producing efficiency is improved, and the sand producing cost is reduced, and on the other hand, noise, dust and sewage pollution during the sand producing process are reduced, various intermediate products are enabled to be fully utilized, and the requirements of the present market are satisfied.

The invention relates to a rolling cavity assembly of a conical sand making machine and a manufacturing method, wherein the rolling cavity assembly of the conical sand making machine is made of Mn13 and high-carbon chromium steel, not only can meet the wear-resistant requirement of aggregate crushing, but also can meet the wear-resistant requirement of rolling for sand making during a sand making process, the upper part of a rolling mortar wall is made of Mn13, the lower part of the rolling mortar wall is made of the high-carbon chromium steel, and the upper part of the rolling mortar wall and the lower part of the rolling mortar wall are in concave-convex casting matching; the upper part of a crushing wall is made of the Mn13 and the lower part of the crushing wall is made of the high-carbon chromium steel, and the upper part of the crushing wall and the lower part of the crushing wall are in concave-convex casting matching. The rolling cavity assembly provided by the invention has the advantages as follows: firstly, the rolling cavity assembly overcomes the critical defect of incapability of making sand due to the formation of a groove formed by rolling a sand making cavity since the abrasion at the upper part of the rolling mortar wall and the crushing wall is small and the abrasion at the lower part of the rolling mortar wall and the crushing wall is large due to different abrasion losses, caused by stones with different specifications to the crushing wall during the sand making process by the rolling mortar wall and the crushing wall made of the single material ; secondly, the abrasion losses, produced during stone crushing, by Mn13 at the upper parts of the rolling mortar wall and the crushing wall, is relatively in accordance with the abrasion loss caused by that the lower part of the high-carbon chromium steel rolling mortar wall rolls the sand making cavity.