33results about How to "Control float" patented technology

The invention discloses a segment fixing pile device for fixing a shield tunnel segment, which comprises a grouting outer sleeve and a grouting inner sleeve; the front end of the grouting outer sleeve is provided with a connecting part and a step part, so that The connecting part and the step part are fixedly connected, the rear end of the grouting outer sleeve is provided with a sealing cover; the front end of the grouting inner sleeve is provided with a support part, and the support part is located on the step part, and the step part The grouting inner sleeve is fixedly connected with the supporting part, and the back end of the grouting inner sleeve is connected with a grouting bag; the connecting part and the outer end of the grouting outer sleeve near the connecting part are both provided with threads. The invention also discloses a construction method of the segment fixing pile device, which comprises the steps of opening the grouting hole, stirring the grouting liquid, grouting and the like. The invention can timely fix the tunnel segment during shield construction, thereby effectively improving construction efficiency and construction quality.

The invention provides a grouting material for surge prevention in the mylonite crushing zone shield construction and a preparation method thereof. The material comprises the following components in percentage by weight: 6-10 percent of cement, 14-18 percent of fly ash, 12-16 percent of bentonite, 12-16 percent of sand, 0.03-0.06 percent of air entraining agent, 0.02-0.06 percent of fiber and 40-45 percent of water. The grouting material provided by the invention has the benefits that the proportion of various raw materials in parts by weight can be adjusted; as the polypropylene fibers are added as fiber curing agents, the consistency and the tensile property of the grouting material are enhanced by utilizing the adhesiveness of the fibers; meanwhile, as the air entraining agent is added, the workability of the grouting material is enhanced.

The invention discloses a method for controlling the adhesion of bubbles to a super-aerophilic orbit on a vertical or inclined upper surface. Under the condition of no energy input, the bubbles can be adhered to the super-aerophilic orbit as needed, specifically, in the super-aerophilic orbit. In the area near the wall of the gas track, arrange a certain angle α A superhydrophilic deflector inclined to the direction of gravity; when the bubble contacts the superhydrophilic deflector under the action of its own buoyancy or upward drag force, due to the superhydrophobicity of the superhydrophilic deflector, the bubble will move along the The super-hydrophilic deflector guides the movement until the bubbles are smoothly adsorbed on the super-aerophilic track and move along the super-aerophilic track; in the present invention, the bubbles are controlled to float along a straight line and the floating speed has no energy input, and only relies on the buoyancy of the bubbles itself. The drag force and the wall adhesion force are used to control the floating trajectory of the bubbles. The invention has strong applicability, and adjusting the curvature of the super-hydrophilic baffle can be used for bubbles of different sizes, so as to achieve the purpose of controlling the floating of different bubbles.

The invention relates to a floatation and enrichment process for silicon-calcium mass type fluorite ores, which is characterized by comprising the following steps: dissociating the constituent mineral monomers of the silicon-calcium mass type fluorite ores by crushing and ore grinding, flowing into a stirring tank after adding water and regulating pulp, then adding a regulating agent of sodium carbonate, water glass, S711 and a collecting agent of sodium oleate into the ore pulp for regulating the pulp, roughing the material of which the pulp is regulated, selecting roughed foam for the firsttime, selecting the foam which is selected for the first time for the second time, combining a product in a primary selecting tank, i.e. middlings which are selected for the first time and a product in a secondary selecting tank, i.e. middlings which are selected for the second time, adding the regulating agent and the collecting agent of the sodium oleate, regulating the pulp, selecting the material of which the pulp is regulated again, returning the foam which is selected again for the roughing operation, selecting the foam which is selected for the second time for the third time until selecting for the fifth time, returning the middlings which are selected for the third time, the fourth time and the fifth time by adopting the separating operation, grading the foam which is selected forthe fifth time by a cyclone, overflowing the cyclone, concentrating and filtering to obtain a fluorite concentrate product. The process disclosed by the invention has the advantages of high separation efficiency, excellent process index, high quality of obtained fluorite concentrates and the like.