Production method for basalt fibers by adopting modified basalt
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A technology of basalt fiber and basalt, which is applied in the field of producing basalt fiber by using modified basalt, can solve the problems of reducing production cost, increasing production cost, dust pollution, etc., and achieves the effect of reducing production cost and stabilizing the production of basalt fiber
Inactive Publication Date: 2019-11-05
山东聚源玄武岩纤维股份有限公司
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Problems solved by technology
[0005] However, crushing basalt rocks and ingredients first and then grinding them into powder also brings new problems. Grinding such a large amount of crushed basalt rocks and ingredients requires special grinding equipment, a site, and arrangements. workers, etc., resulting in a significant increase in production costs. Furthermore, such a large tonnage of basalt powder and powdery ingredients produced after grinding, the basalt powder and powdery ingredients need to be transported, stirred and mixed, and need to be loaded into the kiln Wait, there is serious dust pollution in the process of transportation, mixing and feeding of such large-tonnage basalt powder and powdery ingredients
[0006] Therefore, how to mix and mix the basalt and the ingredients used for modification uniformly is beneficial to the stable production of the uniform ingredients and the kiln, and does not need to grind the basalt and the ingredients into powder to reduce production costs and solve the above problems. Tonnage of basalt powder and powdered ingredients have serious dust pollution problems in the process of transportation, mixing and feeding, etc., which is a technical problem that technical personnel in the field need to solve urgently
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Embodiment 1
[0031] A method for producing basalt fibers using modified basalt, comprising the following steps in sequence:
[0032] 1) remove impurities in the basalt by screening;
[0033] 2) drying the basalt after screening in step 1);
[0034] 3) crushing the dried basalt in step 2) to obtain basalt particles;
[0035] 4) Mix the basalt particles obtained after crushing in step 3), ingredients for modifying the basalt particles and sodium silicate powder, the ingredients being one of quartz sand particles, zircon sand particles and yttrium oxide powder species, two or more;
[0036] 5) adding water to the mixed material obtained after mixing in step 4), the sodium silicate powder is dissolved in water to form water glass, and then stirred, and the wet mixed material is obtained after stirring evenly;
[0037] 6) then the wet mixture obtained in step 5) is dried, and the dry mixture is obtained after the drying is completed. After the drying is completed, the ingredients are adhered...
Embodiment 2
[0041] Embodiment 2, on the basis of the above-mentioned embodiment 1, further preferably, in step 1), the basalt includes the following components in mass percentage: 14% to 17% Al 2 o 3 , 4% to 7% Fe 2 o 3 , 6%~8% FeO, 5%~8% MgO, 2%~9% CaO, 0.8%~2.5% TiO 2 , 1% ~ 3.5% Na 2 O, 2% ~ 4% K 2 O, the balance is SiO 2 and unavoidable impurities.
Embodiment 3
[0042]Embodiment 3, on the basis of the above embodiment 1, further preferably, in step 2), the drying treatment is to keep the screened basalt at 100°C-110°C for 16h-20h.
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Abstract
The invention provides a production method for basalt fibers by adopting modified basalt. The method comprises the steps that basalt particles are taken as the main material, water glass prepared through the mode that water is added to sodium silicate powder is taken as an adhesive, auxiliary materials uniformly adhere to the outer surfaces of the basalt particles, so that the auxiliary materialsand the basalt particles are pasted integrally, the phenomena of falling off and layering do not occur, and therefore the basalt is uniformly mixed with the auxiliary materials used for modification,which is beneficial for uniform treatment for the auxiliary materials and stable production of a kiln; the basalt and the auxiliary materials do not need to be ground into powder, the production costis reduced, the severe dust pollution problem existing in the processes of transportation, mixing and stirring, feeding and the like of large-tonnage basalt powder and auxiliary material powder is solved, and the effects of adjusting physical and chemical properties of the natural basalt and stabilizing basalt fiber production are achieved.
Description
technical field [0001] The invention relates to the technical field of basalt fiber preparation, in particular to a method for producing basalt fiber by using modified basalt. Background technique [0002] Basalt fiber (Continuous Basalt Fiber referred to as CBF) is a continuous fiber made of natural basalt as raw material, melted at 1450-1500°C in a furnace, and then drawn through a platinum-rhodium alloy drawing bushing at high speed. CBF uses a single basalt stone to replace various glass fibers produced by traditional expensive multi-component raw materials, and can simplify the process, save costs, and have no pollution. It is a new high-tech fiber that is green, environmentally friendly and energy-saving. [0003] Since the drawing temperature (1270°C-1350°C) of natural basalt melt is relatively close to the crystallization temperature (1240°C-1270°C), some natural basalt rocks are not suitable for the production of continuous basalt fibers, which greatly limits the pr...
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