37 results about "Mineral dust" patented technology

A rock dusting composition composed of rock dust, e.g., limestone or other mineral dust, water, pumping aid, and polymer, e.g., acrylamide homopolymers, acrylamide copolymers, and combinations thereof, and a method for applying the composition to the surface of a mine. The composition has a water content and a polymer content sufficient to allow the polymer to (i) disperse water molecules within the composition and, upon drying of the composition, (ii) dissipate forming void spaces in the dried composition. The composition is useful for suppressing propagation of a flame and / or fire caused by ignition of coal dust and / or gas within a coal mine.

The invention relates to an environment-friendly sulfuric acid production flue gas treatment device, which includes a ventilation frame, a connecting pipe, a detachable device, and an anti-blocking screening hole assembly. The left end of the ventilation frame communicates with the connecting pipe, and the upper end of the ventilation frame is provided Block the screening hole assembly, and a detachable device is installed at the right end of the anti-blocking screening hole assembly. The invention can solve the problem that the filter holes are easily blocked when the mineral dust is removed, and the number of normally filtered holes is reduced to reduce the filtration efficiency. After working for a period of time, part of the mineral dust is easy to accumulate on the surface of the filter device, resulting in the failure of the device. For problems such as increased load, through the enlarged aperture and the auxiliary push down of the push plate, the clogged mine dust can be dredged and dropped, and the filter can be detached at any time, which facilitates regular cleaning and replacement of the filter. The detachable device can be removed at any time The anti-blocking screening hole is taken as a whole, which is convenient for cleaning, reduces the possibility of a large amount of mine dust accumulating on the detachable device, and avoids the increase of the load of the device.

The invention relates to a vibration-damping jaw crusher with dust-proof function for mineral processing, which includes a main body, a base and a crushing device, and also includes a dust-proof mechanism and a vibration-damping mechanism. The dust-proof mechanism includes a water pump and a fixed box, the fixed box is provided with a dust-proof assembly, the dust-proof assembly includes a connecting rod, a nozzle, a cover plate, a support plate, a hose, two drive units and a number of first springs, and the vibration-damping mechanism includes Vibration assembly and two auxiliary assemblies, the vibration damping assembly includes a support rod, a support plate, a second spring and two vibration damping units, the vibration damping unit includes a slider, a moving rod, a pressure plate, an air bag and an adjustment rod, the The vibration-damping jaw crusher with dust-proof function used for mineral processing sprays water into the main body when the equipment is working through the dust-proof mechanism to avoid dust scattering and affect the surrounding air environment. The vibration-damping mechanism realizes vibration reduction of the main body. functions to reduce the chance of equipment damage.

The invention provides a selenium-rich growing method employing selenium dust, which is characterized in that: (1) the particle size of selenium is as fine as below 2mm; (2) the selenium dust is treated with the above particle size to pH8.5-9.0; (3) the treated selenium dust is used as base fertilizer according the dosage of 50-100kg / 667m2. The invention has the beneficial effects that: the contend of water soluble selenium in the mineral dust can be enhanced to be absorbed by crops with the dosage of only 50-100kg / 667m2 to generally increase the selenium contend of crop above the standard of 0.1mg / kg, which greatly improves the utilization ratio of low contend and low quality selenium mineral source.

The invention discloses an S type coated compound fertilizer and a preparation method thereof. The S type coated compound fertilizer comprises compound fertilizer granules and a coating wrapped on the surface of the granulated fertilizer; wherein, the material for preparing the coating comprises the substances based on the mass portion ratio: 15-27 portions of polystyrene foam, 24-30 portions of recovered Polypropylene polymers, 7-20 portions of low density polyethylene, 10-45 portions of inorganic mineral dust and 2-9 portions of starch or modified starch. The S type coated compound fertilizer has an excellent S type nutrient dissolving mode, can control the release time and amount of nitrogen, phosphorus and potassium nutrient in an intelligentized way, and meets different needs of agricultural production such as culture of seedling, contact fertilizer application and one-off application.

The invention discloses a mineral processing system and a mineral sorting device thereof. The dust removal ventilation passage of the mineral sorting device includes a first dust removal ventilation branch (13), and at least one layer of screen cloth is included in the screen cloth (7) Correspondingly equipped with a first dust-removing ventilation branch (13), the first dust-removing ventilation branch (13) extends along the inclined direction of the corresponding screen, and the lower side of the first ventilation and dust-removing branch (13) is The upper screen surface of the corresponding screen (7), so that in the ventilation state, the dust removal ventilation air flow on the first dust removal ventilation branch (13) is inclined upward along at least part of the corresponding upper screen surface of the screen flow. In the present invention, a part of the dust removal ventilation passage is arranged along the upper screen surface of the screen, so that the dust raising effect of the vibration of the screen on the minerals can be used during the working process, so that the dust can be fully raised, and then the dust removal airflow can flow against the minerals. The movement direction on the sieve surface flows upwards, so as to achieve good results.