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2073results about How to "Reduce consumption" patented technology

Mine roadway advancing and undermining method and main blasting parameters

The invention relates to a mine roadway advancing and undermining method and main blasting parameters. The mine roadway advancing and undermining method is characterized in that blast holes are arranged in a double-lug cracking undermining mode, the nine undermined blast holes are perpendicular to an upright working face and are arranged along an area which is below the center of the working face and separated from the center of the working face by the distance ranging from 10cm to 30cm, and form a cross, the central blast hole and the four end blast holes are charging holes, and holes among the central blast hole and the four end blast holes are empty holes; and vertical cracking undermined holes are detonated at first to form a cracking seam, and then the double-lug undermined holes are detonated, so that a prismatic slot cavity centered at the cross is formed. The main roadway advancing blasting parameters include the diameter of each blast hole, the pitch between each two blast holes, the depth of each blast hole, the number of the blast holes and specific explosive consumption. The empty holes used as free faces are added among the charging undermined holes arranged by the double-lug cracking undermining method, the millisecond blasting technology is adopted, and the blasting free faces are added, so that a clamping effect of ore rock is relieved, smooth undermining can be realized, and blast hole utilization rate can be increased to a great extent.
Owner:江西岿美山钨业有限公司

Fenton and Fenton-like reaction catalyst regeneration and reclamation method

The invention relates to a regenerating and recycling method of Fenton and Fenton like reaction catalyst. The method comprises the following steps of: (1) taking hydrogen peroxide as oxidant and ferrous ion or iron ion as catalyst to treat organic waste water which is difficult to degrade and carrying out neutralization precipitation to obtain ferriferous sludge; (2) dehydrating the ferriferous sludge, drying the ferriferous sludge at a temperature between 100 and 150 DEG C and then burning the ferriferous sludge at a temperature between 350 and 550 DEG C to obtain iron residues; (3) adding dilute sulphuric acid in the iron residues to obtain a ferric sulfate solution; and (4) taking the ferric sulfate solution as Fenton like reaction catalyst used in the oxidative treatment of the organic waste water which is difficult to degrade. The regenerating and recycling method has the advantages that the method can remove more than 95 percent of organic substances in ferriferous sludge, thereby avoiding secondary pollution; the obtained ferric sulfate solution can be used as Fenton like reaction catalyst to reduce the consumption of fresh catalyst; moreover, the method has ideal treatment effect, low cost, convenient operation and enormous application prospect.
Owner:EAST CHINA UNIV OF SCI & TECH

Environment-friendly colorful tile joint mixture and preparation method thereof

The invention discloses an environment-friendly colorful tile joint mixture. The environment-friendly colorful tile joint mixture is characterized by comprising the following components in percentage by weight: 35%-40% of white cement, 40.73%-47.75% of waste porcelain powder, 0-15% of quartz powder, 0-10% of titanium dioxide, 1%-1.5% of re-dispersible emulsion powder, 0.1% of water repellent, 0.15% of water-retaining agent, 0.4% of lignin fiber, 0.1%-0.25% of water reducing agent and 0-2% of pigment. The invention further discloses a preparation method of the environment-friendly colorful tile joint mixture. The consumption of quartz sand and heavy calcium powder is reduced by using the waste porcelain powder as the joint mixture filler; the early strength of the joint mixture is improved by virtue of early strength function of the white cement, so that the construction process requirements are satisfied. The waste porcelain powder is sintered at a high temperature, so that the physical and chemical performances are stable, the volume is stable, and the expansion-shrinkage coefficient is close to that of the tile; the material with the same expansion-shrinkage coefficient is used as the filler, so that the possibility that the tile joint mixture generates cracks can be further reduced.
Owner:厦门路桥翔通股份有限公司
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