444 results about "Soft clay" patented technology

The invention relates to an anti-sticking daubing material applied in steelmaking as well as the preparation method thereof, and is characterized in that the daubing material is composed of the following components by weight percentages as follows: 65 to 80 percent of 0 to 3 mm waste magnesia-carbon brick powder, 10 to 30 percent of waste magnesia-carbon brick powder, 5 to 30 percent of fused magnesia powder, 1 to 4 percent of fine silica powder, 1 to 4 percent of fine Alpha-Al2O3 powder, 0.1 to 1 percent of sodium hexameta phosphate, 0.1 to 0.8 percent of calcium lignosulfonat and 1 to 5 percent of soft clay. The daubing material can prevent the penetration of molten slag by utilizing the lubricating property of graphite in the waste magnesia-carbon bricks, and the slag is not easy to be hung on the surface, thereby not only effectively utilizing the waste magnesia-carbon bricks, but also prolonging the service life and reducing the cost.

The invention discloses a remoulding soft clay sample preparation device and a remoulding soft clay sample preparation method based on a vacuum combined electron-osmosis effect. Nonwoven geotextile, a gravel layer, a sand mat layer and an electron-osmosis cathode are sequentially paved on an osmosis drainage base; the upper and lower ends of a latex film are respectively turned outward and sleeved on a sample loading solidification cylinder and are fixed with the osmosis drainage base by a bolt through a flange; a water vapor separation cylinder is provided with an electric contact vacuum member and is connected with the osmosis drainage base and a vacuum pump respectively through an air pipe; slurry is poured into the designated height of the sample loading solidification cylinder, and an electro-osmosis anode is put in; and the electro-osmosis anode and the electro-osmosis cathode are respectively connected with a programmable direct-current power supply by wires. Under the combined effect of vacuum negative pressure and electro-osmosis, the drainage solidification speed of a soil body is increased, and the solidification stress level in a soil body sample preparation process can be adjusted. According to the device and the method disclosed by the invention, the size of a sample tank is reduced, and meanwhile, the number of sample preparation each time is increased by preparing multiple groups of soil samples; the device has a simple structure and is convenient for operation and sample taking; and the sample preparation period is short, and secondary cutting, disturbance and waste of soil samples are effectively avoided.

The invention relates to a wet refractory mortar and a preparation method thereof. The wet refractory mortar comprises the raw materials in percentage by weight: 60-90% of main raw material of the refractory materials, 1-15% of micro powder, 0.5-5% of bentonite, 0.5-10% of soft clay, 0-5% of methylcellulose, 0-5% of dextrin, 0.05-0.5% of dispersing agent (admixture), 3-10% of glycerin (admixture), 0-5% of water-soluble poly-glyceride (admixture) and 5-25% of clean tap water (admixture). The preparation method comprises the following steps of: preparing the poly-glyceride glycerin solution; preparing the dry powdery semi-finished product; adding the clean tap water for wet mixing; adding the poly-glyceride glycerin solution to be mixed; packing hermetically by using plastic bags; packing hermetically by using hard plastic buckets; and storing and transporting in the cool. The refractory mortar of the invention is directly manufactured into finished products to effectively control the product quality; is in a wet state during the storing and transporting and using to lower the user cost and labor intensity of workers, and avoid the environmental pollution caused in the construction site; and is taken according to need to reduce the unnecessary waste.

The invention relates to a calcium magnesium RH dip pipe hot spray repair material used for high-performance smelting silicon steel and a preparation method, and is characterized in that the invention adopts high-purity magnesium gravel and synthesis magnesium calcium as main components; more than one of organic addition agents of woodiness calcium sulphonate, modified starch ether, and the like are used in composite mode to substitute low-melting harmful plasticizers of soft clay, water glass, and the like used by conventional spray repair material to realize good spray repair adhesiveness and good high-temperature performance of the spray repair material. The invention uses two ultra fine powder of ultra fine MgO micro powder, SiO2 micro powder and calcium hydroxide micro powder in composite mode to act slushing enhancement effect, further improves adhesiveness and agglutinating property of the material, and enhances high temperature strength of the material. Provided spray repair material has high hot strength, good high-residue erosion resistance performance and good molten steel erosion resistance performance; spraying and repairing a dip pipe can make the service life be more than one furnace when a RH device smelts low sulphur special silicon steel, thus satisfying the requirements of the smelting of the special silicon steel.

The invention relates to an explosion-proof iron runner castable which comprises the following raw materials in percentage by weight: 55-80 percent of fusion tabular corundum, 10-30 percent of silicon carbide, 1-5 percent of soft clay, 2-5 percent of pure calcium aluminate cement, 1-7 percent of submicron powder, 0.5-1.5 percent of explosion-proof agent and 0.05-0.15 percent of water reducing agent, wherein the explosion-proof agent is a mixture of aluminum powder, aluminum lactate, explosion-proof fiber and boron carbide powder with the weight ratio of 1-2:2.5-4:1-2.5:2-4. The castable of the invention has no cracks after demoulding and drying and no spalling during baking, has the safe explosion-proof temperature of 800 DEG C increased from 500 DEG C, can be subjected to construction under heat state and rapid temperature rise without spalling and can meet the operating requirements of rapid construction of middle and small size blast furnace iron runner. The castable has long service life, can improve the environment of a casting house, greatly reduces the labor intensity of the workers, improves the quality of molten iron and enhances the application safety factor of the iron runner.

The invention discloses an electroosmosis-load combined consolidometer. An electroosmosis cathode is positioned at a central shaft of a cylinder container which is made of an insulant ,and an electroosmosis anode is arranged to cling to four walls of the cylinder container; a piston type loading cap is arranged at the top of the cylinder container; the center of the soleplate of the cylinder container is provided with a drain hole; the electroosmosis cathode and the electroosmosis anode are respectively connected with the anode and the cathode of a regulated DC power supply which supply voltage; and the loading cap is connected with a lever system which supplies mechanical pressure. The drain hole is connected with a graduated cylinder by a hose to measure the volume of water discharged from soil consolidation; a clock gauge is arranged on the loading cap to measure soil settlement; an exploring tube for measuring voltage distribution and a pore pressure sensor for measuring pressure of water in a pore are arranged in a proper depth of the soil through a pore on the loading cap according to a fixed interval; and the exploring tube and the pore pressure sensor are respectively used for measuring the potential distribution in radial direction of the soil and the pressure of the water in the pore. The invention is mainly applied in electroosmosis-load consolidation test of soft clay, dredged soil, mucky soil, etc.

A lining material of tundish for conticasting contains magnesium sand (80-95 wt.%), alumina (1-10 wt.%), soft clay (1-5 wt.%) and thermoplastic organic compound (2-15 wt.%). Its advantages are high strnegth, anticorrosion power, and high conticasting productivity.

The invention relates to a compound reinforcing method capable of rapidly falling-silt, promoting-seepage, prepressing, reinforcing and blow filling soft clay. The method comprises the following steps: mixing water and soil separating agent and sucking silt mud, introducing the mud mixed with the water and soil separating agent into a cofferdam for silt falling, appearing obvious and rapid solid-liquid separation of the mud in the cofferdam, and overflowing and discharging or recycling the separated tail water containing extremely few of solid matters from the far end of the cofferdam; after filling, silt falling and discharging, respectively inserting a plastic drainage plate, laying a plastic drainage pipe, geotextile and a plastic film on the surface layer of the silt, utilizing a vacuum pump to suck to form negative pressure at the lower part of the plastic film, discharging water in silt body on the surface layer by means of atmosphere pressure to lead the bearing capacity of siltbody on the surface layer to be improved rapidly, establishing an operation platform for follow-up soft base treatment, such as vacuum preloading, pile deep stirring, electroosmosis and plate body stabilizing and other technologies, thus realizing the filling-silt overall soft foundation consolidation treatment purpose in the cofferdam. The technology of the invention reduces the construction time of filling soft soil foundation to half and the cost to a half, is popularized and applied, and has extremely economic and social benefits.

The invention discloses a high-temperature protective coating for a high-carbon steel billet. The coating comprises a dry powder material and an adhesive. The dry powder material is prepared from the following components in parts by weight: 30-50 parts of corundum carbon-free waste brick materials, 10-12 parts of electro-fused mullite, 25-30 parts of fused alumina zirconia waste brick materials, 8-10 parts of silicon carbide, 3-6 parts of soft clay, 3-6 parts of kyanite and 2-4 parts of sodium polyacrylate. The adhesive is prepared from a solid compound adhesive and a liquid compound adhesive. The dosage of the solid compound adhesive is 3-6% of the total weight of the dry powder material and the dosage of the liquid compound adhesive is 2-4% of the total weight of the dry powder material. The protective coating can be used for directly spraying the hot state billet with the surface temperature of 400-1100 DEG C, and not only has the double functions of preventing oxidization and resisting decarburization, but also has the self-repairing ability, so that the loss of iron scale and the thickness of a decarburized layer in the heating process of the high-carbon steel billet are remarkably reduced, the surface quality of the billet is improved. The production efficiency of a rolling mill is improved, and the production cost is lowered.

The invention discloses a sampling method of status quo soft clay hollowness column sample. It includes the steps as follow: (1) fixing the core status quo soft clay hollowness column ample on the positioning board of cut core machine; (2) fixing the undisturbed sample between the drive dial and driven dial, cutting the outwall by drawknife. After the outwall forming, placing the fittings of block retaining ring,both steel model to fix sample;(3) Driving cut core machine drill pipe, cutting and fetching the core of sample by spiral bit and dismantle tool point slice; (4) every time when fetch the depth to 2cm, back out drill pipe, draw out overburden layer, and reset drill bit, fetching core repeat;(5) stop fetching core when the accumulation depth exceed standard depth 2cm;(6) unbolting the sample, shaving off the fluctuation end, finish preparation of sample. The invention can set the status quo soft clay hollowness column sample, the effect of perturbation and pile soil is small, providing the equipment bond guarantee for developing the experimental investigation of status quo soft clay under the complex stress condition.

The invention relates to the field of building materials and particularly relates to a green body of an environment-friendly ceramic tile, the environment-friendly ceramic tile and a preparation method of the ceramic tile. The green body of the environment-friendly ceramic tile comprises the following components in parts by mass: 20-25 parts of dolomite clay, 35-56 parts of ceramic wastes, 10-15 parts of limestone, 5-10 parts of aluminum ores and 8-15 parts of soft clay. The strength of the green body of the polished waste ceramic tile is larger than 0.25MPa, and the drying strength of the green body is larger than 1.8MPa; the whiteness of a finished product of the ceramic tile is high and higher than that of the like product; and environment pollution is greatly reduced, and the ceramic wastes are changed into things of value.

The invention relates to a construction method of a spiral oil-extruding filling pile composite foundation in the stratum containing soft clay, which comprises the following steps: determining the structural size, the position and the number of spiral oil-extruding filling piles; manufacturing and constructing a vertical drainage well in the middle part of the design positions of every two adjacent spiral oil-extruding filling piles; manufacturing and constructing each spiral oil-extruding filling pile according to the design position in the middle part between every two finished vertical drainage wells; and then paving drain liner layers on the foundation surface. The invention aims at providing a method for treating the spiral oil-extruding filling pile composite foundation in the stratum containing the soft clay, which avoids the negative oil-extruding effect of the spiral oil-extruding filling piles, improves the drain speed of saturated clay around piles, improves the strength of soil bodies around the piles and under the piles, substantially reduces the settlement after construction, improves the effectiveness and the use range of the spiral oil-extruding filling piles, increases the space length between the piles, reduces the pile number, saves the engineering investment, and accelerates the construction progress.

The invention discloses a strengthening method for soft soil foundation, comprising that: a. the soft soil in the site is strengthened for the first time by low position vacuum self-weight combined preloading; b. the soft soil in the site is strengthened for the second time by the vacuum preloading electroosmosis method; c. the scove layer is strengthened by vacuum electroosmosis dewatering; and d. vibration rolling, leveling the site. The strengthening method for soft soil foundation is suitable for the strengthening engineering of the flowing mud, which mainly contains ultrafine particles and the consolidation coefficient is minimal, silt and mucky soil foundation, and particularly suitable for the site which needs high requirements of the strength and deformation, but highly susceptible and saturated soft clay, and super-soft foundation, which is not suitable to be strengthened by dynamic compaction, the strengthening method for soft soil foundation has the advantage of providing a high performance-price ratio processing method for the rapid, efficient, high-quality strengthening of the soft soil foundation.

The invention discloses an electro-osmosis consolidation shearing device. The electro-osmosis consolidation shearing device comprises a frame, a vertical loading system, a horizontal shearing loading system and an electric insulation experiment box, wherein the frame comprises a bottom frame and a portal frame; the bottom frame is fixedly connected with the portal frame; the vertical loading system is fixedly connected to the upper wall of the portal frame, and comprises a shaft pressure air cylinder, a shaft pressure displacement electronic sensor and a shaft force sensor; the electric insulation experiment box comprises electrode tubes, an upper shearing box and a lower shearing box; during an electro-osmosis experiment, soil is placed in the upper shearing box and the lower shearing box, and the electrode tubes are inserted into the soil. The electro-osmosis consolidation shearing device is high in experiment efficiency, small in occupation area, convenient to operate, compact in structure, accurate and reliable in determination result, and applicable to an indoor or field experiment for the electro-osmosis test on soft clay and mucky soil in eastern coastal regions and the Pearl River Delta region, and serves for solving the related engineering problems of foundation deformation and stability parameter determination in geotechnical engineering problems of foundation treatment, coastal reclamation, port revetment and the like.

The invention relates to a fireproof heat-insulation paint, in particular to a light inorganic silicate fiber reinforcing fireproof paint which is characterized by comprising the following materials in percentage by weight: 10%-30% of building gypsum powder, 5%-15% of silica sol, 15%-30% of soft clay, 5%-15% of cenospheres, 5%-20% of diatomite, 5%-15% of expanded vermiculites, 2%-10% of silicate fibers, 0.5%-5% of gypsum retarders and 0.5%-2% of damp-proofing agents. The light inorganic silicate fiber reinforcing fireproof paint is respectively packaged into a solid material and a liquid material and is the fireproof heat-insulation paint which has the advantages of environmental protection, acid-alkali resistance, light weight, noninflammability, heat insulation and sound absorption function.

The invention relates to magnesia-calcium-zirconium non-stick slag spray paint, which effectively solves the problems of high energy consumption and environmental pollution during the use of the paint. The invention is calculated by weight percentage: dolomite 20-80%, zircon sand 2 -10%, corundum powder 5-15%, silicon micropowder 2-10%, bentonite 2-5%, soft clay 5-15%, phosphate 2-6%, calcium lignosulfonate 0.1-1%, boric acid 0.2-2%, the total amount is 100%. The test in the steel-making converter shows that the spray coating of the present invention has good fluidity, can complete the gunning operation within three minutes, can effectively isolate the slag and is easy to clean up the slag, reducing the work Time, the main raw material used in the present invention is non-burning dolomite, which is not hydrated, has a wide range of raw material sources, is convenient to obtain, and because it does not burn raw materials, it saves a lot of energy, which is beneficial to reduce costs and save energy consumption.

The invention provides a petroleum proppant and a preparation method thereof. The petroleum proppant mainly comprises the following raw materials in percentage by weight: 75%-82% of ferro-nickel slag and 18%-25% of soft clay, wherein the sum of the percentages by weight of the raw materials is 100%. The preparation method of the petroleum proppant comprises the following steps: preparing raw materials, mixing the raw materials, prilling, firing and sieving. The petroleum proppant has the characteristics of low density, high-temperature resistance, high-pressure resistance, corrosion resistance, high strength, high flow conduction capability, low crushing rate and high thermal shock resistance; the petroleum proppant is used for reusing the industrial waste slag; the utilization rate of the resources is increased; the problem of the environmental pollution is alleviated; and in addition, the preparation method of the petroleum proppant is low in energy consumption, high in productivity and suitable for industrial production.

The present invention relates to a ground quick dynamic consolidation technique suitable for application on shallow soft soil. Said invention makes the dynamic consolidation theory be combined with vacuum water-reducing technique, and adopts an active water discharge mode of specially-made vacuum water-reducing system, etc. to accelerate the dissipation of excess hydrostatic pore-water pressure and discharge of pore-water before and after compaction and in the course of compaction, and combines the dynamic characteristics of saturated soft clay and strength-increasing law to improve the construction process and technical parameters of traditional compaction method so as to effectively raise consolidation effect and depth of the soil body.

The invention provides two proposals for a continuous casting tundish magnesia coating. In the first proposal, the magnesia coating consists of the following raw materials in weight percentage: 85 to 95 percent of intermediate-range magnesia, 2 to 6 percent of soft clay, 2 to 6 percent of sodium hexametahposphate, 0.4 to 2.5 percent of active lime powder, 0.4 to 0.8 percent of paper fiber and 0.1 to 0.2 percent of explosion-proof fiber. In the second proposal, the magnesia coating consists of the following raw materials in weight percentage: 85 to 94 percent of intermediate-range magnesia, 2 to 6 percent of soft clay, 2 to 6 percent of sodium hexametahposphate, 0.5 to 2.5 percent of active lime powder, 1 to 1.5 percent of aluminum silicate fiber and 0.1 to 0.2 percent of explosion-proof fiber. The two proposals of the invention both adopt the soft clay and the sodium hexametahposphateas as bonding agents so as to adapt to the low-carbon or carbon-free tundish coating. Low carbon content or no carbon in the coating can ensure steel pouring quality, improve the finished product rate of steel, improve the erosion resistance and permeability of tundish simultaneously, and provide reliable guarantee for smooth production.

The invention relates to an anhydrous stemming for a blast furnace. The anhydrous stemming is prepared from the following raw materials in percentages by weight: 30-40 percent of high-alumina bauxite, 10-15 percent of high-purity silicon carbide, 20-25 percent of soft clay, 10-25 percent of carbonaceous material, 5-15 percent of submicron powder, 15-25 percent of binding agent, and additionally silicon metal powder addictives accounting for 1-3 percent of the total weight of the raw materials. The anhydrous stemming has the advantages of favorable high-temperature fire performance, linearity change ratio of lower than 0.3 percent under the condition of 1400 DEG C*2h, breaking strength of more than or equal to 10MPa, high intensity, slag-iron resistant scouring, easy sintering, excellent work performance, less pollution and low production cost, and is beneficial to environment protection as well as popularization and application.

The invention discloses a high temperature-resistance, safe and nontoxic microwave heating body and a method for manufacturing the same. The microwave heating body comprises a microwave active particle material and a bonding agent by which the microwave active particle material is bonded into a usable shape, wherein the microwave active particle material is silicon carbide, ferrite or a combination of the silicon carbide and the ferrite; and the bonding agent is a combination of fused quartz, talcpowder, spodumene, cordierite, mullite, feldspar, kaolin, soft clay and silicic acid. The preparation method comprises the following steps that: the raw materials are uniformly mixed and moulded; and a blank is dried and then sintered at the temperature of between 900 and 1,280 DEG C to form the microwave heating body. The microwave heating body does not burst when the microwave heating body is chilled from nearly 500 DEG C to room temperature, a good linear relationship is established between the microwave heating time and the surface temperature of the heating body, and the use performance requirements on cooking devices and industrial ovens are met.

The invention discloses a hot patching material for an iron runner, which is prepared from alumina aggregate, SiC, SiO2 micropowder, alpha-Al2O3 micropowder, asphalt powder, zirconite micropowder, explosion-proof fiber, metallic silicon powder, soft clay and binder, wherein the binder is a mixture of aluminum sulfate and aluminum phosphate. In the invention, a ternary system Al2O3-ZrO2-SiO2 is introduced into the main iron runner casting material through the zirconium micropowder; and when the composition is fused and crystallized, crystals of mullite, corundum and baddeleyite simultaneously precipitate to form a staggered structure, thereby greatly improving the molten iron and iron slag corrosion resistance and enhancing the medium / high temperature strength of the hot patching material. The self-made aluminum sulfate / aluminum phosphate environmental-protection compound binder does not produce irritant cancerigenic gas in the product construction process.

The invention discloses a processing method for reinforcing a soft clay ground through vacuum preloading in combination with electro osmosis. According to the method, solid airtight separate vacuum preloading in combination with electric osmosis in which reinforcing steel bars are taken as the electro osmosis electrodes are adopted for reinforcing the ground. During the arrangement of vacuum preloading systems, by using a separate seal joint, a sealed water pipe, a sealed main pipe and a vacuumizing device, plastic water drainage plates which are inserted into the soil and plastic water drainage plates which are paved on the surface of the soil form two sets of separate airtight vacuum systems which can be separately controlled to turn on or off, and the vacuum degrees of the two vacuum systems can be separately regulated. After the vacuum systems are arranged, rebar electrodes are inserted in rows in the gaps between the plastic water drainage plates inserted in the soil, and then the perforations between the rebar electrodes and the vacuum preloading airtight systems are sealed. With the processing method, the vacuum transfer and utilization efficiency is improved, the water drainage effect of deep-layer soil is improved, the soil processing uniformity is remarkably improved, the overall soil reinforcing effect is improved, and fast, efficient and energy-saving hybrid reinforcement construction is realized.

The invention relates to a composite thermal-shock-resisting high-aluminum refractory brick for steel smelting blast furnace hot blast stoves and a preparation method of the brick. The refractory brick is prepared by mixing and evenly grinding homogeneous material, sillimanite, andalusite, alpha-aluminum oxide, zirconium oxide, soft clay powder and water, forming via a machine and firing at a temperature of 1475-1500 DEG C. According to the composite thermal-shock-resisting high-aluminum refractory brick and the preparation method, the formula is reasonable, the cost is relatively low, the preparation method is simple, the operation is easy, the thermal shock resistance of the fired refractory brick is greatly enhanced, the service life of the hot blast stoves is prolonged and the economic benefit of the enterprises is improved.

The invention discloses an electro-osmotic consolidation test device and method for consolidating a soft clay foundation. The device comprises an external visual main body, measuring electrodes used for measuring the voltage and the current of a clay body and potential measuring needles are arranged in the external visual main body, the bottom of the external visual main body is provided with a drainage channel, and a real-time image collecting system is arranged outside the external visual main body; power is supplied to the measuring electrodes by a power supply, and a voltmeter and an ammeter are connected to a loop connected with the measuring electrodes. According to the device and the method, omnidirectional comprehensive measuring is conducted on the conductivity, the clay pressure, the settlement volume, the displacement, the voltage and the current, data is automatically processed with the help of a computer, the electro-osmotic effects under the different factors are visually compared, and compared with a previous device, the device has more practicability and comprehensiveness.

The invention relates to a testing device for measuring the shearing strength parameter changes in the solidifying process of soft clay and belongs to the technical field of soft clay analyzing devices. The testing device comprises a frame, a loading plate, miniature vane shearing instruments with a pore pressure testing function, a torsion meter, a sample chamber, a measuring unit and a lifting mechanism. The loading plate is arranged above the sample chamber, and the loading plate or the sample chamber is arranged on the frame through the lifting mechanism. The measuring unit comprises sensors used for collecting pore water pressure, soil pressure, displacement and other information. By means of the testing device, a shearing failure mechanism without volume change action or a shearing failure mechanism without pore pressure action can be independently studied, a shearing failure mechanism under volume change and pore pressure coupled action can be studied at the same time, and more testing types are achieved; shearing strength changes caused by soil body changes and pore pressure changes in the loading and solidifying process of soft clay can also be studied, and the changing rules of the shear strength parameters in the whole study process along with the solidifying process can be studied.

The invention relates to a light-weight magnesia brick and a preparation method thereof. The technical scheme is as follows: the preparation method comprises the following steps: uniformly mixing 30-85 wt% of sintered magnesia, 10-65 wt% of magnesite, 0.5-4 wt% of silicon dioxide fine powder, 0.5-2% of soft clay and 1-3% of binder, carrying out press forming, naturally drying for 24 hours, keeping the temperature of 110-300 DEG C for 8-24 hours, and firing at 1350-1500 DEG C for 3-12 hours to obtain the magnesia brick. The sintered magnesia is granules, fine powder or mixture of granules and fine powder; and the magnesite is granules, fine powder or mixture of granules and fine powder. The light-weight magnesia brick has the advantages of low volume density, low heat conductivity, moderate strength, strong alkaline slag corrosion resistance, high heat-insulating property and high melting point, is beneficial to energy saving and consumption reduction, and satisfies the light-weight requirement of the material. The invention is suitable for the liner of a high-temperature industrial kiln and container.

The invention discloses a soft clay hollow cylinder sample preparation instrument and a use method. The sample preparation instrument comprises a table type water drilling machine part, a replaceable drill bit part and a sample preparation barrel part; the table type water drilling machine part comprises a water drilling machine, a lifting bracket and a regulating handle; the lifting bracket is arranged at the lower part of the water drilling machine, a tool bit of the replaceable drill bit part is installed on the water drilling machine through an adapter; the sample preparation barrel part is fixed on the lifting bracket, a sample preparation barrel bracket of the sample preparation barrel part is fixed on a bottom turntable, a sample preparation barrel is arranged on the sample preparation barrel bracket, a spent clay barrel is arranged right below the sample preparation barrel, and a turntable motor is connected with the bottom turntable. According to the soft clay hollow cylinder sample preparation instrument and the use method, provided by the invention, the sample preparation instrument is simple in structure, convenient in operation and easy in demolding, and can realize mechanized sample preparation rapidly; the disturbance of the intact clay is reduced, the interior pile collapse of a hollow sample is prevented, the quality of a prepared sample is guaranteed effectively, and a foundation is laid for the torsional tear test of a hollow cylinder.