5 results about "Calcium aluminoferrite" patented technology

This invention relates to the field of solid waste cementitious material preparation technology, specifically to a rapid-setting and hardening cementitious material based on calcium aluminoferrite from all solid waste and its preparation method, comprising the following steps: S1. Mixing and stirring modified red mud, carbide slag, mineral powder, and modified mineralizer evenly, and then pressing into shape; S2. Performing a first-stage calcination, calcining from room temperature to 950-1000℃, and then performing a second-stage calcination to 1220-1300℃ and holding at that temperature for 30-120 minutes, and cooling to room temperature to obtain modified mineral phase clinker; S3. Passing through a 200-mesh square hole sieve, mixing with modified multi-element solid waste mineral materials in a mixer, and stirring evenly to obtain the rapid-setting and hardening cementitious material based on calcium aluminoferrite from all solid waste. This invention significantly reduces the calcination temperature of clinker through the synergistic effect of various raw materials, thereby greatly reducing energy consumption and carbon emissions. The complex ionic reaction mechanism and the complementary physicochemical properties of multi-component solid waste enrich the diversity of hydration products and the density of the gel structure, thus ultimately achieving the excellent performance of "fast setting, fast hardening, and high strength" of the all-solid waste cementitious material.

This invention relates to the field of solid waste cementitious material preparation technology, specifically to a rapid-setting and hardening cementitious material based on calcium aluminoferrite from all solid waste and its preparation method, comprising the following steps: S1. Mixing and stirring modified red mud, carbide slag, mineral powder, and modified mineralizer evenly, and then pressing into shape; S2. Performing a first-stage calcination, calcining from room temperature to 950-1000℃, and then performing a second-stage calcination to 1220-1300℃ and holding at that temperature for 30-120 minutes, and cooling to room temperature to obtain modified mineral phase clinker; S3. Passing through a 200-mesh square hole sieve, mixing with modified multi-element solid waste mineral materials in a mixer, and stirring evenly to obtain the rapid-setting and hardening cementitious material based on calcium aluminoferrite from all solid waste. This invention significantly reduces the calcination temperature of clinker through the synergistic effect of various raw materials, thereby greatly reducing energy consumption and carbon emissions. The complex ionic reaction mechanism and the complementary physicochemical properties of multi-component solid waste enrich the diversity of hydration products and the density of the gel structure, thus ultimately achieving the excellent performance of "fast setting, fast hardening, and high strength" of the all-solid waste cementitious material.

This invention belongs to the field of borehole sealing and filling technology, specifically relating to a coal and rock drill cuttings gelling agent, its preparation method, and its application. The coal and rock drill cuttings gelling agent provided by this invention includes a base material and additives. The base material is an inorganic cementing material, including at least one of calcium sulfoaluminate, calcium silicate, calcium aluminoferrite, and calcium aluminate. The additives include at least one of an adhesive, suspending agent, water-reducing agent, reinforcing agent, expanding agent, or speed-regulating agent. In this gelling agent, the base material can bind the drill cuttings, which play a skeletal role, improving material strength; the additives can further optimize the material's strength, setting time, and other properties.

This invention discloses a novel adaptive cementitious material for seawater conditioning, its preparation method, and its application. The cementitious material comprises the following components: 30-70 parts by weight of silicate cement, 20-50 parts by weight of auxiliary cementitious materials, 5-15 parts by weight of high-Belitte calcium sulfoaluminate cement clinker and / or high-Belitte calcium aluminoferrite cement clinker, 6-14 parts by weight of nanoparticle sol, 1-3 parts by weight of water-reducing agent, 3-7 parts by weight of nanoparticle stabilizer, and 28-50 parts by weight of mixing water. The nanoparticle sol includes both nano-silica sol and nano-alumina sol, with the silica sol connecting the two sol particles through the dehydration condensation of Si-OH on its surface and -COOH on the surface of the alumina sol to form -COO-. The cementitious material of this invention exhibits high early strength, steadily increasing later strength, strong chloride ion curing ability, and strong resistance to chloride ion erosion, demonstrating excellent durability and resistance to seawater erosion.

The invention relates to the technical field of cement manufacturing, in particular to a method for preparing cement clinker from copper slag tailings and the cement clinker, and the method comprises the following steps: step 1, proportioning: mixing copper smelting slag recleaning tailings, limestone and sandstone according to a certain proportion; step 2, raw material preparation: grinding the raw materials mixed in the step 1 to specified fineness to prepare a raw material; step 3, homogenizing: fully homogenizing the raw material; step 4, calcining: calcining the raw material obtained in the step 3 at the sintering temperature of 1300-1350 DEG C, and keeping the constant temperature for 30-60 minutes; and 5, rapidly cooling the calcined clinker, and discharging to obtain the target high-iron-phase cement clinker. Through process improvement, the cement clinker is prepared from copper smelting slag recleaning tailings, high-added-value resource utilization of a large amount of industrial solid waste is achieved, and the obtained cement clinker takes high-strength tricalcium silicate and high-corrosion-resistance tetra calcium aluminoferrite as main minerals and has the characteristics of high strength, good corrosion resistance, low hydration heat and the like.