39results about How to "Good cementation" patented technology

The invention discloses an alkali-activated high-volume tailing mud cement brick and a preparation method thereof, belonging to the technical field of building materials; the raw materials of the cement brick include 450-550 parts of tailing mud and 150-500 parts of fly ash in parts by weight. 250 parts, 80-120 parts of cement, 80-120 parts of iron ore tailings, 100-150 parts of water, 40-50 parts of alkali activator and 5-10 parts of water reducer; the tailings are iron ore beneficiation tailings The alkali activator is composed of quicklime, gypsum and sodium silicate; each raw material is weighed by weight and mixed to obtain a cementitious material, and then molded to obtain an alkali-activated high-volume tailings cement brick; the present invention utilizes quicklime, Gypsum and sodium silicate are combined to obtain an alkali stimulator, which can effectively activate the active ingredients in the iron ore dressing tailings and transform them into substances with better cementation properties, thereby making them compatible with fly ash, iron ore tailings and The cement is effectively gelled, and the mechanical properties of the obtained cement bricks are excellent.

The invention relates to a method for preparing a refractory material adhesive from oxidized wastewater sludge in aluminum alloy section plants, which comprises the following steps: taking sludge, washing with water, carrying out vacuum filtration, adding 10-30% of sludge into a reaction vessel on dry basis of sludge, adding 10-30% of sludge into the reaction vessel, adding 20-40% of water, and regulating the sludge into paste; slowly adding 40-60% of phosphoric acid, heating until the mixture temperature reaches 80-120 DEG C, promoting chemical reaction while continuously stirring, and finishing the reaction when the solution becomes clear and transparent; and cooling to room temperature, and standing for 24 hours to obtain the refractory material adhesive. The main component is aluminum dihydrogen phosphate, the pH value is 1.46, and the density is 1.45-1.47 g / cm<3>. The method is simple and easy to implement and low in cost, can recycle the oxidized wastewater sludge in aluminum alloy section plants, achieves the goal of waste comprehensive utilization, and reduces the environmental pollution caused by direct discharge of waste.

The invention discloses a pre-alkaline inorganic mineral polymer-based fast repair mortar and a preparation method thereof, which belong to the field of building materials. The pre-alkaline inorganic mineral polymer-based rapid repair mortar includes raw material components and parts by mass respectively: 28-55 parts of pre-alkali solution, 80-100 parts of slag, and 1-8 parts of coagulant to increase flow Use 10-25 parts of fly ash, 110-130 parts of sand, and 15-22 parts of water. The materials included in the pre-alkali solution and their mass parts are: 13-36 parts of silicon-aluminum material, 15-20 parts of alkali excitation solution. The preparation method is as follows: first prepare the alkali excitation liquid, then mix it with the silicon-aluminum material heated by microwave for pre-alkalinization reaction to obtain the pre-alkaline liquid, then add other raw materials and stir to prepare it. The pre-alkalised inorganic mineral polymer-based rapid repair mortar can adjust the setting time according to the repair demand, and can also improve the strength of the pre-alkaliized inorganic mineral polymer-based rapid repair mortar, and is widely used in the rapid repair of roads.

The invention relates to a supersaturated sodium chloride cement slurry system for well cementation, and belongs to the technical field of cement slurry for well cementation in petroleum drilling. The supersaturated sodium chloride cement slurry system comprises highly sulfur-resisting grade G silicate cement, a weighting agent, a salt resistant water-loss control agent, a preserving agent, a setting retarder, fresh water, sodium chloride, an enhanced channeling preventing agent and an expanding agent. The highly sulfur-resisting grade G silicate cement is used as a base, the property instability and the metastable state property of the supersaturated solution are utilized, and other raw materials are added proportionally, so that the supersaturated sodium chloride cement slurry system has good salt stain resistance and calcium contamination resistance, is simple and convenient in on-site construction, has a good well cementation effect, can meet the well cementation requirements in complex conditions such as salt-gypsum layer, high pressure deep well salt-gypsum layer and super-thick salt-gypsum layer and the like, is convenient in cementing operation, and has a remarkable oil gas water channeling prevention effect, and the density of the supersaturated sodium chloride cement slurry system can be optionally regulated in a range of 1.90-2.40g / cm<3>. The supersaturated sodium chloride cement slurry system overcomes the defect that the thickening time of the supersaturated salt water cement slurry is difficult to control, and can meet the well cementation requirements in various complex conditions.

The invention relates to a modified wood and a preparation method of the modified wood. The modified wood includes a wood body and a hydrated calcium silicate gel located in the voids of the wood body. The modified wood provided by the invention has high density, dimensional stability and excellent mechanical properties. The preparation method of the modified wood comprises the following steps: 1) introducing component A into the pores of the wood body to obtain the wood loaded with component A; 2) introducing component B into the wood loaded with component A In the pores, make it react with component A in the pores to form calcium silicate hydrate gel. The method for strengthening wood with inorganic components provided by the invention is energy-saving and environment-friendly. After the wood is strengthened, the resulting wood has excellent properties and has high promotion and application value.