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32 results about "Scoria" patented technology

Scoria is a highly vesicular, dark colored volcanic rock that may or may not contain crystals (phenocrysts). It is typically dark in color (generally dark brown, black or purplish red), and basaltic or andesitic in composition. Scoria is relatively low in density as a result of its numerous macroscopic ellipsoidal vesicles, but in contrast to pumice, all scoria has a specific gravity greater than 1, and sinks in water. The holes or vesicles form when gases that were dissolved in the magma come out of solution as it erupts, creating bubbles in the molten rock, some of which are frozen in place as the rock cools and solidifies. Scoria may form as part of a lava flow, typically near its surface, or as fragmental ejecta (lapilli, blocks and bombs), for instance in Strombolian eruptions that form steep-sided scoria cones. Chemical analysis of scoria found in Yemen showed that it was mainly composed of volcanic glass with a few zeolites (e.g. clinoptilolite). Most scoria is composed of glassy fragments, and may contain phenocrysts. The word scoria comes from the Greek σκωρία, skōria, rust. A colloquial term for scoria is cinder.

Cold steel scoria processing method

The invention discloses a cold steel slag processing method, which comprises the following steps of: pouring processed solidified and moistened cold steel slag into an inclinable grizzly for screening, magnetically separating iron contained in the lower layer by a head wheel permanent-magnet drum, and carrying out secondary screening by a first vibrating screen; delaminating and removing iron of larger slag blocks after screening by a belt-type iron remover and a permanent-magnet drum, crushing by a hydraulic protection crusher, screening by a second vibrating screen, returning larger slag blocks and crushing to form a one-step closed-loop circle; screening small slag blocks screened by the first vibrating screen and the second vibrating screen by a third vibrating screen; and screening the small ones by a fourth vibrating screen, and circularly crushing the large ones to form a secondary closed-loop circle, wherein the slag blocks screened by the third and the fourth vibrating screens are the final slag powder, and all of the magnetically-selected metal materials are transported to small iron material fields, bean steel material fields or roe steel material fields. By adopting double closed-loop circle process, the cold steel slag processing method has high efficiency, low labor intensity and less dust in process and can completely achieve zero discharge.
Owner:南京钢铁集团盛达实业有限公司

Wet-type desulfuration method for steel scoria with flue gas

The invention discloses a method for steel slag wet-type desulphurization of flue gas. The method includes the following process: steel slag powder is subjected to hydrolysis and additional dissolution treatment; a steel slag solubilization liquid is obtained, added into a solid-liquid separator and mixed with steel slag absorption pregnant solution; after separation, the supernatant liquid after passing through a steel slag absorption liquid storage tank is pumped to an absorption tower where desulphurization occurs when the supernatant liquid is in contact with flue gas; or the steel slag solubilization liquid is added into the steel slag absorption liquid storage tank and mixed with the supernatant liquid, and then the steel slag solubilization liquid is pumped to the absorption tower where desulphurization occurs when the liquid is in contact with the flue gas; a steel slag absorption pregnant solution produced at the bottom part of the absorption tower is subjected to separation in the solid-liquid separator; precipitum is dehydrated in a hydroextractor, and plaster, a by-product, is obtained; and purified flue gas emitted from the bottom part or the top part of the absorption tower is discharged into the atmosphere. Compared with the traditional lime/limestone-plaster method, the invention has the advantages of ensuring the desulphurization degree of flue gas can be attained, and effectively preventing the absorption tower from scaling. Moreover, the equipment occupies a small area and is operated at a low cost, so that the economic benefits of waste utilization are improved.
Owner:江苏乐尔环境科技股份有限公司

Purification technique of steel scoria magnetic separation product

The invention discloses a purification technique of steel slag magnetic separation products, which comprises the following steps: (1) the steel slag magnetic separation product is put into a ball mill and water is added, (2) full grinding is processed, the product is discharged from the exhaust end of the ball mill naturally and divided into up-screen product and below-screen product through a cylinder screen, (3) the up-screen product is divided into block iron and tailings by magnetic pulley, the block iron is dried by dryer to make water content below 2%, (4) the product below screen is divided into overflow and sand-returning by a classifier, and the overflow grade of the classifier is controlled by the size of the spray water, which controls the sand-returning grade of the classifier, and (5) the sand-returning is conveyed into the fine powder feed chute through belt, the classifier overflow is conveyed to the thickener through a pump, and the underflow of the thickener is filtered by the filter and conveyed into the tail powder feed chute. The purification technique of steel slag magnetic separation products has the advantages of no non-magnetic and weakly magnetic material loss, full and complete recovery, raising the content of iron of luppen from 60% to 65% to above 90%, raising the grade of the magnetic separation powder from 40% to 50% to above 60%, raising the content of iron of steel slag product completely, and raising the comprehensive utilization ratio of the steel slag.
Owner:鞍钢绿色资源科技有限公司 +1

Formula design and adjustment method of lunar regolith simulant for engineering

The invention discloses a formula design and adjustment method of a lunar regolith simulant for engineering, in the method, butte black clay scoria in Jinchuan Town, Huinan Country is selected as a raw material for preparing the lunar regolith simulant; median value particle size (D50), effective particle size (D10), particle size (D30) with 30% of sifted weight, control particle size (D60), coefficient of non-uniformity (Cu) and coefficient of curvature (Cc) are selected for controlling mechanical properties of the lunar regolith simulant; the median value particle size D50 is more than 48 mu m and less than 300 mu m, the design particle size distribution is in the range of a particle size distribution curve of lunar regolith as far as possible, and the shape of the particle size distribution curve can be in line with the natural law by regulating the Cu and the CC; the raw material in 10 different mesh sizes can be obtained after crushing the scoria, pulverizing and sorting, the particle size distribution of the raw material after sorting is taken as a coefficient matrix, the design particle size distribution is taken as an object matrix, and a formula matrix of the lunar regolith simulant can be obtained by solving linear equations; when the design particle size distribution of the lunar regolith simulant and the particle size distribution of the raw material change, re-adjustment and calculation are performed so as to enable the mechanical properties of the prepared lunar regolith simulant to be close to those of real lunar regolith.
Owner:JILIN UNIV

Method for forming counterweight block of elevator with waste steel scoria

The invention discloses a method for forming elevator counterweight blocks by waste steel slag, which uses the waste steel slag with the iron content of 30 percent to 40 percent, iron plates with the thickness of 0.78mm to 0.82mm and cement as raw materials. The method comprises the following processes: 1. preparing a metal shell of the counterweight block; 2. processing the waste steel slag: the waste steel slag is crushed and passes through a powdering machine to lead particle diameters to be less than 3mm; 3. mixing materials: the raw materials are weighed according to the following weight radio: the waste steel slag: 90 percent to 94 percent, the cement: 6 percent to 10 percent, water: 5 percent to 6 percent, the mixture material is prepared after being mixed evenly and fully by a mixer; 4. molding: the mixture material is transmitted to a pressure machine by a transmission belt to be pressed into needed modules automatically, and then the needed modules are transmitted to an iron plate container made by the step 1 by the transmission belt; 5. maintaining: the modules are maintained for 6 to 8 days, and an upper cover is covered and welded after the counterweight block is hardened completely, and then the finished product is obtained. The method for forming the elevator counterweight blocks by the waste steel slag has the advantages that the waste can be turned into useful materials, thus conforming to the national requirements of building a resource-conserving society.
Owner:叶春华

Scoria-imitation decoration sheet, scoria-imitation veneering decoration building block and processing method of building block

The invention provides a scoria-imitation decoration sheet, a scoria-imitation veneering decoration building block and a processing method of the building block. The building block comprises a commonconcrete building block body with a cavity and the scoria-imitation decoration sheet attached to the outer side face of the common concrete building block body, the inside of the cavity of the commonconcrete building block body is filled with a heat preservation filling material, and the scoria-imitation decoration sheet is of a natural-scoria-imitation sheet structure which is prepared by adopting a chemical foaming-maintenance technology, wherein irregular air holes are formed in the scoria-imitation decoration sheet; raw materials of the scoria-imitation decoration sheet comprise cement, aggregate, an active mixed material, a foaming agent and an air entraining agent. The processing method comprises the steps that firstly, the inside of the cavity of the common concrete building blockbody is filled with the heat preservation filling material, and then cement mortar is used for attaching the scoria-imitation decoration sheet to the outer side face of the scoria-imitation decorationsheet. According to the scoria-imitation decoration sheet, the chemical foaming-maintenance technology is used for preparing the scoria-imitation decoration sheet, and by adjusting the sizes of the air holes and distribution of hole diameters, after the scoria-imitation decoration sheet is pasted to the surface of the building block, the surface of the building block has a unique and vivid natural scoria decoration effect; the finished product is high in density and strength and excellent in heat preservation performance and has a wide market prospect.
Owner:CHINA BUILDING MATERIALS ACAD

Cold steel scoria processing method

The invention discloses a cold steel slag processing method, which comprises the following steps of: pouring processed solidified and moistened cold steel slag into an inclinable grizzly for screening, magnetically separating iron contained in the lower layer by a head wheel permanent-magnet drum, and carrying out secondary screening by a first vibrating screen; delaminating and removing iron of larger slag blocks after screening by a belt-type iron remover and a permanent-magnet drum, crushing by a hydraulic protection crusher, screening by a second vibrating screen, returning larger slag blocks and crushing to form a one-step closed-loop circle; screening small slag blocks screened by the first vibrating screen and the second vibrating screen by a third vibrating screen; and screening the small ones by a fourth vibrating screen, and circularly crushing the large ones to form a secondary closed-loop circle, wherein the slag blocks screened by the third and the fourth vibrating screens are the final slag powder, and all of the magnetically-selected metal materials are transported to small iron material fields, bean steel material fields or roe steel material fields. By adopting double closed-loop circle process, the cold steel slag processing method has high efficiency, low labor intensity and less dust in process and can completely achieve zero discharge.
Owner:南京钢铁集团盛达实业有限公司
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