34 results about "Ironwork" patented technology

The street ironwork according to the invention includes a frame (4), a manhole cover (6), a hinge (10) for pivotably connecting the covering element relative to the frame between a closed position and an open position, the hinge including a frame knuckle (20) and a covering element knuckle (22).The street ironwork includes a locking element (40) attached to the covering element knuckle and suitable for preventing the covering element knuckle from being released from the frame knuckle in at least one of the open positions of the covering element relative to the frame or in the closed position.

The invention discloses a method for extracting zinc oxide from iron-smelting blast furnace fly ash. Compared with the commonly used rotary furnace process at present, the method has the following advantages that 1, the used fly ash index is wide: the iron content required by the fly ash used by the rotary furnace process is below 20% and the zinc content is above 20%, and iron content required by the fly ash used by the method is not limited and the zinc content is above 6%; 2, fuel addition is not required: 0.45 ton of anthracite or 0.35 ton of coke powder is required to be added in each ton of fly ash in the rotary furnace, and the method does not require fuel addition; 3, the operation cycle is long: the operation cycle of the rotary furnace is 60 days and the operation period of the enclosed furnace in the method is longer than one year; 4, the fireproof material in the furnace is low in cost: the high-temperature wear-resistant fireproof brick used by the rotary furnace costs ** yuan per ton, and the common fireproof brick used in the enclosed furnace costs ** yuan per ton; and 5, the tailing recycle is convenient: the tailings of the rotary furnace process flow out in a liquid state and need to be continuously cooled by water, and contain less iron so that the value in use is low, and the tailings in the method are discharged in a solid state, the tailings with iron content higher than 50% can be directly used in ironworks and the tailings with iron content lower than 50% can be used in cement plants.

The present fastener (36) for street ironwork includes a fastening or locking element (56). The fastener (36) includes a retaining foot (60) suitable for removably connecting the fastener (36) to a member of the street ironwork, via a receiving cavity (40) made in the member of the street ironwork by element of a shape-matching connection. The invention further relates to the use in attaching jacks to man hole covers.

The present invention relates to a roller skate, and particularly relates to a rocker-type roller skate made of ironwork of metal circular rod material, comprising omni-directional wheels, and further comprising an ironwork frame made of metal circular rod material. One of these omni-directional wheels is mounted on both the front end and the rear end of the frame. The present invention incorporates an ironwork technique into the rocker-type roller skate, enabling the rocker-type roller skate made of ironwork of metal circular rod material to both have very good playability and provide ornamental ironwork rocking members, while increasing the structural strength of the roller skate.

The present invention provides a kind of network cable pliers that can nail nails. The head of the network cable pliers has a piece of hammer iron. When we are laying network cables at high altitudes, we only need to hold a network cable pliers in our hands to make network cable joints. , and nails can be nailed to fix the network cable, which is very convenient to use.

The invention discloses equipment capable of quickly taking out iron products in decoration waste. The equipment comprises a separator, the separator is internally provided with an input cavity, a rotating mechanism can smash the decoration waste into small blocks, so that subsequent treatment is facilitated, a fishing mechanism is arranged on the right side of the rotating mechanism, a long cavity with a leftward opening is formed in the right end wall of the input cavity, a transmission mechanism is arranged on the lower side of the fishing mechanism, the transmission mechanism can fish outthe waste, sinking in water, in the decoration waste and take out the iron products for simple classification, the equipment is easy to operate, after a certain amount of water is added into the equipment, the equipment is started, the decoration waste is put into the equipment, after the decoration waste is smashed, the decoration waste falls into the water, light objects float on the water, theiron products and other heavy objects sink to the water bottom, through the equipment, the light objects floating on the water can be fished out, and the heavy objects can be divided into two kinds, namely non-iron products and the iron products after being conveyed by a conveying belt.

The embodiment of the invention discloses a method for discriminating ancient cast iron and block iron products, which belongs to the technical field of discriminating methods for ancient iron and steel products. The discrimination method includes two parts: metallographic analysis of ancient cast iron and block iron-making products and non-metallic inclusion analysis; wherein: metallographic analysis is aimed at distinguishing the difference in room temperature equilibrium structure of ancient cast iron and block iron-making products, not Metal inclusion analysis is aimed at the quantity, composition, morphology and distribution of non-metallic inclusions in ancient cast iron and block ironworks. The present invention obtains a method for accurately discriminating ancient cast iron and lump iron-making products through synergistic analysis of alloy phase structure and inclusions, which is beneficial to large-scale popularization and application.