Eureka-AI is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Eureka AI

2917results about "Cement production" patented technology

Geopolymer gel material for rush repairs and rush constructions

The invention provides a geopolymer gel material for rush repairs and rush constructions, which is prepared by adding water to 13-17 percent by weight of exciting agent and 82-87 percent by weight of slag containing aluminosilicate. The slag comprises one or the combination of more of blast furnace slag, steel slag, coal ash and coal gangue, and the exciting agent comprises the following components in percentage by weight: 35-75 percent of SiO2, 0-55 percent of Na2O, 0-65 percent of K2O, 0-1 percent of CaO and 0-1 percent of SO3. The geopolymer gel material which has the characteristic of quick setting and hardening is prepared by using the industrial waste slag as a main raw material and matching the exciting agent, and the geopolymer gel material has excellent mechanical property and controllable setting time and can replace gel materials such as fast setting and hardening cement, and the like in the processes of rush repairs and rush constructions. The industrial solid wastes such as the blast furnace slag, the steel slag, the coal ash, the coal gangue, and the like containing the aluminosilicate series are used as main raw materials, metakaolin is not added and the raw materials do not need to be calcined, thus the invention has low energy consumption, less pollution, simple process, low cost, environmental protection and energy saving.

Technological method for producing high-purity low-iron aluminum sulfate by using coal ash and comprehensively utilizing coal ash

The invention discloses a technological method for producing high-purity low-iron aluminum sulfate by using coal ash and comprehensively utilizing the coal ash, comprising the following steps of: carrying out mechanical activation, flotation decarburization, magnetic separation for deferrization, aluminum extraction with sulfuric acid, solid-liquid separation, concentration of aluminum sulfate crude liquor, organic alcohol alcoholization for acid rinse, organic alcohol alcoholization for deferrization and aluminum sulfate dewatering and drying on the coal ash to obtain the high-purity low-iron aluminum sulfate with low Fe content. The invention solves the problems on impurity removal and purification of the aluminum sulfate in the recycling process of the coal ash, simplifies the process flow, reduces the energy consumption, solves the technical problem of overlarge accumulation of secondary residue quantity, achieves high extraction ratio of aluminum contained in the coal ash, and realizes the recycling of organic alcohol and sulfuric acid and the comprehensive utilization of side products including unburnt black, magnetic iron powder, iron-containing aluminum sulfate crystals, high-silicon-dust active mineral blending materials or novel silicon-magnesium cement, and the like. The technological method has the advantages of simple process, short flow, easiness for control of a production process, high aluminum extraction ratio, low impurity content of products and stable quality.
Owner:内蒙古昶泰资源循环再生利用科技开发有限责任公司 +2

Alkali-activated cementing material and preparation method thereof

InactiveCN104446045ABroaden the way of resource utilizationIncrease consumptionCement productionLiquid waterAlkali activated
The invention relates to an alkali-activated cementing material prepared from siliceous iron tailings and a preparation method of the alkali-activated cementing material. The preparation method comprises the following steps: 1) proportionally and evenly mixing siliceous iron tailing powder, coal ash and slag powder together to obtain iron tailing powder-coal ash-slag powder compound powder; 2) mixing liquid water glass with water to obtain an alkali activating agent solution; 3) adding the alkali activating agent solution to the compound powder and stirring evenly to obtain an alkali-activated cementing material paste; 4) injecting the alkali-activated cementing material paste into a die for vibrating molding and maintaining under a normal temperature condition until knockout, thereby obtaining an alkali-activated cementing material net paste test piece; and 5) performing steam curing on the alkali-activated cementing material net paste test piece. The alkali-activated cementing material has the beneficial effects that the alkali-activated cementing material hardened paste has excellent mechanical properties, the 3d compressive strength of the optimal proportion of the hardened paste is greater than 60MPa and the 28d compressive strength of the hardened paste is greater than 80MPa.

A comprehensive recovery method for complex arsenic-containing and valuable metal slag dust materials

Disclosed is a comprehensive recovery method for a complex material containing arsenic and valuable metal slags, comprising passing the materials containing arsenic through a primary rotating kiln to volatilize the arsenic, and through a secondary rotating kiln to purify the arsenic, so that an arsenic product containing 99.5% As 2 O 3 is produced; reduction smelting slags from the primary and secondary rotating kilns in a blowing volatilization furnace, with the resultant highly arsenious dust being returned to the primary rotating kiln for treatment, and the slags being used as a raw material in a cement manufactory and a raw material for zinc after undergoing strongly reductive dearsenization and volatilization of zinc in a fuming furnace; the resultant alloy containing arsenic being subjected to basic oxidizing refinement, and the oxidized/refined alloy after dearsenizations containing Pb > 72%, Sb > 12%, As 2 O 3 <0.02%, being sold as a lead-antimony alloy; the basic slags from the refinement, containing As 2 O 3 10%-20%, being subjected to crushing, dissolution in base, and filtration, with the slags thereof being returned to a blowing volatilization furnace for treatment; precipitating tin from the basic solution containing tin and arsenic by blowing in CO 2 , with the filtered tin oxide being sold as a raw material for tin; adding Ca(OH) 2 into the basic filtrate containing arsenic to precipitate arsenic, returning the filtered slags of calcium arsenate to the primary rotating kiln for treatment, and evaporating the remaining basic solution to concentrate and recover the base.

Burning-free geology polymer material of red mud coal ash and preparation method thereof

The invention relates to a burning-free geology polymer material of red mud coal ash and a preparation method thereof, belonging to the technical field of recycling inorganic nonmetal material and industrial solid waste. Kawazu mud powder and coal ash are taken as main substrate raw materials, building fine sands and building crushed stones are taken as aggregate, solid water glass powder is taken as alkali activator to prepare the burning-free geology polymer material of red mud coal ash. The raw materials comprise the following components based on parts by weight percent: 5-98% of the kawazu mud powder, 1-65% of the coal ash, 1-96% of the building fine sands and the building crushed stones, and 1-20% of the solid water glass powder. Counting the red mud+the coal ash+the building fine sands and the building crushed stones as 100%, the raw materials further comprise the following components based on parts by weight percent: 5-45% of water and 0.1-10% of calcium lignosulphonate. The preparation method comprises the steps of: dosing, mixing, aging, shaping, maintaining and drying, etc. The invention has the advantages of the high use ratio of industrial solid waste, the less pollution, the low energy composition and the simple operation of the preparation technology, and embodies the important meanings of environment protection, energy conservation and emission reduction.

Inorganic artificial combining stone and preparation method thereof

InactiveCN102557571AExpand raw material resourcesLow costCeramic shaping apparatusCement productionFiberKaolin clay
The invention discloses inorganic artificial combining stone and a preparation method thereof. The artificial combining stone uses silicon acid-base solution to arouse metakaolin to react and generate geopolymer to serve as an inorganic cementing agent, and the artificial combining stone mainly contains the metakaolin, the silicon acid-base solution, natural stone aggregate, decoration aggregate, a thickening time control agent, inorganic pigment and fibers. The preparation method is firstly enabling the thickening time control agent and the inorganic pigment to be dissolved in the silicon acid-base solution to obtain mixed serous fluid, evenly blending the metakaolin, the natural stone aggregate, the decoration aggregate, the fibers and the mixed serous fluid, preparing the artificial combining stone through model entering or material distribution, vibration under the vacuum condition, molding in a pressing mode, maintaining, cutting, polishing, burnishing and surface protection. The artificial combining stone not only has decoration features which can be equal to that of resin artificial stone, but also is non-toxic, environment-friendly, low in cost, resisting in corrosion of most majority of acid-base salts, durable in high temperature and excellent in durable performance, obviously avoids whiting and saltpetering phenomena after a long time use, and is strong in pollution resisting capability.

Anti-crack alkalis excited ecological cement

InactiveCN101456685AImprove impermeabilityExcellent volume shrinkageCement productionSlagMass ratio
The invention relates to anti-cracking alkali exciting ecological cement, which consists of A, B and C, and solid-phase mass ratio of the A to the B to the C is 5-10:75-90:5-15. The A is exciting agent, which comprises the following components by mass percentage: more than or equal to 80 percent of water glass of which modulus is 0.7 to 1.4, and less than or equal to 20 percent of one or a plurality of sodium sulfate, sodium phosphate, sodium carbonate, sodium chloride and magnesium chloride; and the A is prepared into solution containing more than or equal to 40 percent of solid for use. The B is a mineral additive, which comprises the following components by mass percentage: 30 to 70 percent of slag powder, and 30 to 70 percent of other additives, wherein the other additives comprise one or a plurality of siliceous dust, coal ash, metakaolin, red mud, burnt shale, colliery waste, steel slag and alloy slag, and is grinded to powder of which specific surface is 350 to 800m<2>/g. The C is active magnesium oxide, wherein mass content of MgO is more than or equal to 70 percent. The active magnesium oxide is calcined at a temperature of between 700 and 1,000 DEG C and then mixed and grinded with the B to become powder. The cement is the low-carbon discharge ecological cement with the advantages of high-early strength, durability, permeability resistance, corrosion resistance, freezing and thawing resistance, low heat of hydration, good cracking resistance, economy and environmental protection, and is used for civil construction, water conservancy, national defense, and oil well and mine passage support engineering.

Active belite-sulphate aluminum cement clinker and preparation method for active belite-sulphate aluminum cement clinker

The invention discloses active belite-sulphate aluminum cement clinker, which comprises the following mineral compositions in weight percentage: 25-30 percent of beta-type C2S, 25-30 percent of a-type C2S, 28-40 percent of C4A3S`, 4-12 percent of C4AF and 4-8 percent of amorphous-phase substance. The control of different forms and the change of number of the C2S in the clinker are controlled mainly through special setting on clinker ingredient rate values. The invention also discloses a preparation method for the active belite-sulphate aluminum cement clinker. Compared with traditional common silicate cement clinker, the active belite-sulphate aluminum cement clinker has the advantages that more industrial solid waste residues are used in raw materials by the active belite-sulphate aluminum cement clinker, and thereby, the production cost is reduced, the use proportion of limestone is greatly reduced, and the carbon dioxide emission in clinker production is obviously reduced. Under the condition that the water demand and the setting time of the obtained clinker are basically the same as that of the common silicate cement clinker, the strength of the obtained clinker is superior to that of the common silicate cement clinker.
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products