37 results about "Sulfur concrete" patented technology

This invention relates to the area of heat management systems and, specifically, to the heat management systems, which include application of phase change materials (PCM). Proposed heat or cold storage multistage tower comprises a housing with a multistage system of flat rigid containers; significant fraction of internal space of each container is filled with PCM; these containers are fabricated from ceramics, glass, glass ceramics or sulfur concrete. Another version of the heat or cold storage tower is based on application of multi-channel blocks from ceramics, glass, glass ceramics or sulfur concrete; the parallel internal vertical channels of the blocks are open and sealed at their bottoms alternatively, and the channels with the sealed bottoms are filled partially with PCM. The proposed invention allows to achieve effective heat transfer between a heat transfer fluid (HTF) and PCM in the processes of charging and discharging of the containers with heat or cold.

Use of a non-ionic surfactant in the preparation of modified sulfur and/or modified sulfur cement that may or may not be modified sulfur concrete.

The invention discloses a mineral beneficiation method for separating bismuth and sulfide from bismuth-sulfide concentrate. The method comprises the steps of firstly, separating out pyrrhotite with strong magnetism from the bismuth-sulfide concentrate through weak magnetic separation in advance and then separating out pyrrhotite with weak magnetism from the bismuth-sulfide concentrate through strong magnetic separation; secondly, combining the pyrrhotite with the strong magnetism and the pyrrhotite with the weak magnetism into sulfur concrete 1 mainly comprising the pyrrhotite; adding a sulfurinhibitor, a bismuth activating agent, a bismuth collecting agent and a foaming agent to magnetic separation tailings to conduct flotation to obtain bismuth concrete and sulfur concrete 2 mainly comprising pyrite. The mineral beneficiation method has the advantages that the bismuth-sulfur separation effect is good; the grade of obtained bismuth concrete is high; the recovery rate is high, and isapplicable to separation of the bismuth-sulfur concrete and particularly suitable for separation of bismuth-sulfur concrete with the high pyrrhotite content.

The invention discloses sulfur-containing polypropylene composite fiber enhanced sulfur concrete and a preparation method thereof. The concrete is prepared from the following ingredients in percentage by mass: 40 to 60 percent of modified sulfur, 15 to 25 percent of coarse aggregate, 10 to 25 percent of fine aggregate, 1 to 10 percent of fillings and 0.1 to 1.5 percent of polypropylene composite modified fiber. The preparation method sequentially comprises the following steps of 1, preparing polypropylene grafted sulfur; 2, preparing polypropylene composite modified fiber; 3, preparing modified sulfur; 4, taking the coarse aggregate, the fine aggregate, the fillings, the modified sulfur and the polypropylene composite modified fiber according to the designed quantity, and sufficiently and uniformly stirring the materials to obtain fiber enhanced sulfur concrete. Practice proves that the sulfur-containing polypropylene composite fiber enhanced sulfur concrete has the advantages that the mechanical property is excellent; the corrosion performance is high; the anti-cracking performance is good, and the like, wherein the bonding performance between the polypropylene composite fiber and the sulfur concrete interface is good; in addition, the operation of the preparation method is simple; the cost is low.

In the present invention, as a sulfur-containing material fully filled into a cavity of a mold body in which the inside of an outer mold having the cavity which can be hermetically sealed is heated to a temperature within a preset temperature range of which a lower limit is equal to or above a melting point of sulfur is cooled and contracted in the cavity, the sulfur-containing material stored in a filling tank in which a cover is attached to an upper end opening of filling tank, so that the inside of filling tank can be hermetically sealed, and also, the inside of filling tank is pressurized to a predetermined pressure, and the inside of filling tank is heated to a temperature within the preset temperature range, is replenished into the cavity by a pressure in filling tank to mold a modified sulfur concrete substance product.

The invention discloses coal tar modified durable sulfur concrete and a preparation method thereof. Each cubic meter of the coal tar modified durable sulfur concrete comprises the following componentsby mass: 1080 kg of industrial sulfur particles; 600 kg of granular crushed stone; 72 kg of fly ash; 41 kg of granulated blast furnace slag; 342 kg of quartz sand; 29 kg of waste ceramic fine aggregate; 24 kg of waste glass micro powder; 36kg of stone chip powder; 36kg of volcanic ash; 65 kg of rubber particles; and 30kg of glass fiber; wherein the mass of the modifier is 1-5% of the mass of theindustrial sulfur particles; the mass of the thickening agent is 0.1-0.5% of the total mass of the sulfur concrete; and the mass of the coupling agent is 0.3-2% of the mass of the industrial sulfur particles. According to the invention, the durability problem caused by material embrittlement and volume shrinkage due to sulfur solid-phase transformation is solved, the cost problem that the traditional sulfur concrete is generally high in price is solved, and the problems that wastes occupy land and pollute the natural environment are also solved.

The present invention relates to a system for producing a modified sulfur solidified body, which comprises the following steps: receiving and mixing molten sulfur from a molten sulfur tank 1 and a sulfur modifier from a sulfur modifier tank 2 to produce modified sulfur; The modified sulfur production tank 3 whose contents are heated to a predetermined temperature or higher; the modified sulfur from the modified sulfur production tank 3 and the fine aggregate from the fine aggregate heating storage bin 4 are received and mixed to produce a modified sulfur intermediate At the same time, the modified sulfur intermediate material tank 5 that heats the internal contents to a predetermined temperature or more; receives and kneads the modified sulfur intermediate material from the modified sulfur intermediate material 5 and the modified sulfur intermediate material from the coarse aggregate heating storage silo 6. At the same time, a kneading device 7 that heats the internal kneaded material to a predetermined temperature or more; receives and stores the raw materials kneaded by the kneading device 7, heats it to a predetermined temperature or more, and simultaneously measures the internal raw materials and injects Injection device 8 of mould 36 . Thereby, a modified sulfur cured product which can be easily transported and can be stored as a non-dangerous substance (herein, a non-dangerous substance refers to a flame-retardant or non-flammable substance) can be produced.

A sulfur concrete has constituents that include a coarse aggregate in an amount in a range of 40-50 wt % of the weight of the sulfur concrete, a fine aggregate in an amount in a range of 20-40 wt % of the weight of the sulfur concrete, a fine filler in an amount in a range of 8-12 wt % of the weight of the sulfur concrete, and a binder in an amount in a range of 12-20 wt % of the weight of the sulfur concrete. The binder includes elemental sulfur in an amount in a range of 25-60 wt % of the weight of the binder and asphalt in an amount in a range of 40-75 wt % of the weight of the binder.

The invention relates to a method for building underground parking waterproof facilities by means of a tower crane. Removal of a tower crane body is carried out after the completion of off-wall liningmasonry, a sulfur concrete temporary support is constructed between a tower crane foundation and an independent foundation in advance to absorb the vibration generated in the working process of the tower crane body, vibration damage is stopped on the sulfur concrete temporary support, through the way of removing the sulfur concrete temporary support, a concrete body permanent support can be utilized to realize the way of permanent support after pouring, unstable support of the damaged sulfur concrete temporary support to the independent foundation is removed, and thus under the condition of ensuring the strength requirement and waterproof requirement of a basic foundation of an underground garage, the transport capacity of the tower crane can be better utilized to achieve the purpose of energy saving and emission reduction.

The invention discloses high-performance sulfur concrete and a preparation method thereof. The high-performance sulfur concrete comprises the following raw materials in percentage by mass: 30%-37% ofcement, 38%-43% of river sand, 11%-17% of water, 0.4%-0.8% of a water reducer, 8%-15% of sulfur powder, 0.1-0.5% of an emulsifying dispersant and 0.8-1.2% of resin emulsion. By the high-performance sulfur concrete provided by the invention, sulfur can be recycled, furthermore, the bending resistance, the seepage resistance and the frost resistance of the concrete can be improved, and the durability of the concrete and the service capability of the concrete under extreme condition are improved effectively.

A concrete composition comprising a mouldable mixture of aggregate, binder and liquid vehicle, wherein the aggregate comprises sulphur concrete-derived aggregate and wherein the binder comprises hydraulic binder. The use of crushed sulphur concrete as aggregate in cement-based concrete reduces the hardening time of the concrete.

The invention discloses a super-tough concrete bridge shock-proof system which comprises a pile group arranged on a foundation soil layer. The upper portion of the pile group is covered with a gravellayer, a pouring bearing platform is arranged on the upper portion of the gravel layer, the upper portion of the pouring bearing platform is connected with a bridge pier, a capping beam is arranged atthe top of the bridge pier, a fluctuating power generation device is arranged on the pouring bearing platform, sulfur concrete boxes are arranged on the periphery of the pouring bearing platform, sulfur concrete is poured into the sulfur concrete boxes, heating wires are embedded into the sulfur concrete and electrically connected with piezoelectric crystals, and a hydraulic connecting rod mechanism is arranged between the bridge pier and a bridge. Energy generated by an earthquake is transformed into electric energy by the fluctuating power generation device, the hydraulic connecting rod mechanism at the tops of the sulfur concrete and the bridge pier is further used for comprehensively absorbing the energy, the system is reasonable in design, the earthquake energy absorption capacity ofa bridge structure is greatly improved, and impact of the earthquake energy on the bridge pier is reduced.

The invention belongs to the technical field of macromolecule materials, and discloses sulfur concrete with sublimation corrosion resistance and a preparation method thereof. The sulfur concrete is prepared from, by mass, 15-20% of sulfur, 0.2-0.6 % of an additive, 55-65% of lunar rock coarse aggregate and 14-26% of lunar soil filler. The additive is prepared by mixing magnesium stearate, polystyrene fluoride and carbon tetrafluoride at the mass ratio of 1:5:20, and the addition amount of the additive is 1-4% of sulfur. The additive is used for pre-modifying sulfur, the sublimation rate of sulfur components in sulfur concrete under high vacuum conditions is effectively reduced, the durability of sulfur concrete under high vacuum conditions is improved, and the preparation technology is simple and easy to operate, the construction efficiency is high, and the sulfur concrete is easy to produce and use under high vacuum conditions such as the moon.

The invention provides an ultra-large-span cable-stayed bridge with thrust piers. The bridge comprises cable bent towers, the thrust piers, transition piers, mid-span main beams, side-span main beams,anchor span main beams, stay cables and expansion joints. The mid-span main beams and the side-span main beams are continuous, and the expansion joints are arranged between the anchor-span main beamsand the side-span main beams; the thrust piers are arranged between the side span main beams and the anchor span main beams, brackets are arranged at the positions, at the thrust piers, of the bottoms of the anchor span main beams, and anti-thrust supports are arranged between the brackets and the thrust piers. In the construction process, temporary support padstones which are made of sulfur concrete and internally provided with electric heating wires are arranged on the side span sides of the thrust piers, temporary brackets are arranged at the positions, at the thrust piers, of the bottomsof the side span main beams, and temporary anti-thrust supports are arranged between the temporary brackets and the temporary support padstones. The thrust piers are used for bearing the horizontal force of the anchor span main beams and serve as support for counteracting the horizontal force of the side span and anchor span main beams in the construction stage, expensive ground anchors can be omitted, and a cantilever construction method can be conveniently used for installing the mid-span main beams and converting a system after mid-span folding.

The invention discloses an electric heating fusion connection type modified sulfur concrete pipe and a manufacturing method thereof. The electric heating fusion connection type modified sulfur concrete pipe comprises a plurality of pipe fitting segments which are sequentially connected in an inserted manner, wherein one end of each pipe fitting segment is a conical socket, the other end of each pipe fitting segment is a conical spigot, the conical socket of the front pipe fitting is connected with the conical spigot of the corresponding back pipe fitting in a sleeving manner, electric heatingmetal wires are wound around the outer periphery of the conical spigots, and after the electric heating metal wires are electrified, the electric heating metal wires emit heat to enable the front pipefitting and the corresponding back pipe fitting to be fixed together through hot fusion. The pipe fitting is made of the material of the following modified sulfur concrete formula with a heating andpouring formation method. The modified sulfur concrete formula comprises, by mass, 15%-24% of modified sulfur, 12%-21% of filler, 46%-55% of stone and 18%-27% of sand. The modified sulfur concrete pipe material achieves connection in an electric heating fusion manner; and compared with a common concrete pipe material, the modified sulfur concrete pipe material has the advantages that the connection manner is simple and reliable, seal performance is good, and the construction efficiency can be greatly improved.

Reinforced sulphur concrete wherein one or more metal reinforcing members are in contact with sulphur concrete is disclosed. The reinforced sulphur concrete comprises an adhesion promoter that enhances the interaction between the sulphur and the one or more metal reinforcing members.