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A platform for research: civil engineering, architecture and urbanism
Nano silicon-titanium powder material and preparation method thereof
The invention relates to a nano silicon-titanium powder material and a preparation method thereof. The preparation method comprises the following steps: S1, uniformly mixing raw materials, and feeding the raw materials into a plasma electric furnace in a protective gas atmosphere; and introducing hydrogen-containing protective gas into the furnace for heating, and carrying out high-temperature melting and mixing; s2, enabling the molten and mixed liquid flow to flow into a graphite cyclone separator, separating out a liquid silicon-containing raw material and sending the liquid silicon-containing raw material into a laser generator, directly radiating the molten raw material by generated laser, and enabling the silicon-containing raw material to quickly reach a boiling point and be evaporated and gasified into silicon steam by utilizing a laser radiation effect; and sucking the silicon steam into a cooler, rapidly cooling the silicon steam to 1120-1240 DEG C, mixing the silicon steam with other melt mixtures, and naturally cooling the mixture for subsequent treatment. By adopting the nano silicon-titanium powder material and the preparation method thereof, the bulk density of the obtained composite silicon powder is 0.9-1.5 g/cm < 3 >, and the composite silicon powder has the characteristics that the particle size span is large, the micro gradation is excellent, the dispersing performance is good, the water demand ratio is obviously reduced when the composite silicon powder is doped into concrete, the dry shrinkage rate of the concrete can be effectively reduced, and the like.
一种纳米硅钛粉体材料及其制作方法，包括如下步骤：S1.将原材料混合均匀后在保护气气氛下送入等离子电炉；将炉内通入含氢保护气升温,进行高温熔混；S2.熔混后的液流流入石墨旋风分离器，分离出液态含硅原料并送入激光发生器,产生的激光直接辐射熔融原料，利用激光辐射效应，使含硅原料迅速达到沸点并蒸发气化成硅蒸汽；硅蒸汽吸入冷却器并迅速冷却降温至1120‑1240摄氏度,并与其他熔混物混合后自然冷却进行后续处理。采用本发明所述纳米硅钛粉体材料及其制作方法，得到的复合硅粉堆积密度为0.9‑1.5 g/cm3，具有粒径跨度大，微观级配优良，分散性能良好，掺入混凝土中使用需水比明显降低、能有效降低混凝土干缩率等特点。
Nano silicon-titanium powder material and preparation method thereof
The invention relates to a nano silicon-titanium powder material and a preparation method thereof. The preparation method comprises the following steps: S1, uniformly mixing raw materials, and feeding the raw materials into a plasma electric furnace in a protective gas atmosphere; and introducing hydrogen-containing protective gas into the furnace for heating, and carrying out high-temperature melting and mixing; s2, enabling the molten and mixed liquid flow to flow into a graphite cyclone separator, separating out a liquid silicon-containing raw material and sending the liquid silicon-containing raw material into a laser generator, directly radiating the molten raw material by generated laser, and enabling the silicon-containing raw material to quickly reach a boiling point and be evaporated and gasified into silicon steam by utilizing a laser radiation effect; and sucking the silicon steam into a cooler, rapidly cooling the silicon steam to 1120-1240 DEG C, mixing the silicon steam with other melt mixtures, and naturally cooling the mixture for subsequent treatment. By adopting the nano silicon-titanium powder material and the preparation method thereof, the bulk density of the obtained composite silicon powder is 0.9-1.5 g/cm < 3 >, and the composite silicon powder has the characteristics that the particle size span is large, the micro gradation is excellent, the dispersing performance is good, the water demand ratio is obviously reduced when the composite silicon powder is doped into concrete, the dry shrinkage rate of the concrete can be effectively reduced, and the like.
一种纳米硅钛粉体材料及其制作方法，包括如下步骤：S1.将原材料混合均匀后在保护气气氛下送入等离子电炉；将炉内通入含氢保护气升温,进行高温熔混；S2.熔混后的液流流入石墨旋风分离器，分离出液态含硅原料并送入激光发生器,产生的激光直接辐射熔融原料，利用激光辐射效应，使含硅原料迅速达到沸点并蒸发气化成硅蒸汽；硅蒸汽吸入冷却器并迅速冷却降温至1120‑1240摄氏度,并与其他熔混物混合后自然冷却进行后续处理。采用本发明所述纳米硅钛粉体材料及其制作方法，得到的复合硅粉堆积密度为0.9‑1.5 g/cm3，具有粒径跨度大，微观级配优良，分散性能良好，掺入混凝土中使用需水比明显降低、能有效降低混凝土干缩率等特点。
Nano silicon-titanium powder material and preparation method thereof
一种纳米硅钛粉体材料及其制作方法
WU BIN (author) / ZHAO YULING (author) / CAO ZHENGJU (author)
2021-09-07
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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