A special agitator shaft with symmetrically arranged agitator pegs and sleeves of tungsten carbide for wear protection devel- Vertical, batch operation mill for the preparation of tungsten Ideal flow behaviour due to a special agitator peg arrange-ment and the hemispherically shaped chamber floor integrated screen plate for grinding media separationIntensive cooling through a double-wall grinding tank and cooled circulation pipeline
Product inlet via rotor / immersion tube system prevents back flow of grinding media into the feed line.
Generally, there are two ways to obtain nano-powders. A bottom-up manufacturing method (bottom up) for chemical methods, such as chemical precipitation, sol-gel process (sol-gel),... Another method is physical method, which changes the powder particles from big to small (top down), such as mechanical ball milling,... And so on.
The Development In 1963, the first vertical agitator was developed internationally, the first horizontal agitator was developed in 1975, the first horizontal agitator bead mill with eccentric disks was introduced to the public and the horizontal disc grinder was introduced, in 2004, which became the industry standard. In the following years, the grinding media separation systems, the geometry of the grinding disks and the various grinding chamber materials were further developed.
The grinding system pin nanomill shows the evolutionary develop- ment of system with the rotor-slotted pipe separating system. The enclosed horizontal agitator mill is designed for highest product throughput rates and possesses a pin grinding system for highest grinding intensity.
In 2011, we developed the first zirconia comminution chamber technology in China. It has no metal ion pollution and is used in batteries, pharmaceuticals, glazes, ink and food.
工作原理:
NORVA諾研高效納米砂磨機采用銷棒式結構設計,物料隨著進料泵由頂端進入研磨腔,隨著轉子的旋轉而均勻分布,在轉子和定子縫隙內渦流離心力的作用下對物料進行了徹底的預分散處理。在接下來強烈的研磨中,轉子棒銷和定子對研磨介質連續發生劇烈的撞擊變化,研磨介質再作用于物料,物料得以研磨,研磨后的物料在研磨腔停留時間特別短,從而得到一個極窄的產品粒度分布帶,在進料泵壓力和離心力作用下,由于密度的不同,研磨介質返回研磨腔,物料卻沿著離心力相反的方向經縫隙式分離器過濾分離,循環往復。 |
結構設計
核心設計轉子上安裝有進口耐磨鋼棒銷,數量和體積、安裝位置按渦流體力學設計,達到最大研磨比研磨能量,提高物料研磨效率,使物料研磨細度達到納米級,經第三方馬爾文激光粒度測試儀測定,最小細度可達≤60nm。
主要特點:
*
高能密度(1.5-2.3 kW/dm3)銷棒式砂磨機
* 具有較小的長度/直徑比例;
*
設計適用于大流量生產(連續式或循環式);
* 產品顆粒級配分布窄;
*
砂磨機分離系統效率高,是傳統砂磨機200-300倍分離效率;
* 可使用的研磨珠子粒徑為0.1mm;
*
研磨筒體的材料可根據耐磨性,耐腐蝕性的要求加以更換;
* 所使用料漿的粘度范圍廣泛,在10 mPas - 8000 mPas;
*
由于采用研磨筒體及分離系統采用雙重強制冷卻系統,出料產品溫度低(一般≤35℃);
* 易于操作和過程控制;
研磨筒
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棒銷材質
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研磨軸
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分離系統(mm)
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研磨筒體內襯材質(標準)
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筒體密封
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研磨介質
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帶冷卻
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進口硬質合金耐磨棒銷
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不銹鋼
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大流量動態分離器30μm -0.5mm
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特耐磨鋼
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進口雙端面機械密封
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氧化鋯珠
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研磨容積(L)
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加工批量(L)
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轉速((r/min)
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驅動功率(kw)
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細度(nm)
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長度(mm)
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寬度(mm)
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高度(mm)
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重量(kg)
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10L
|
100-500
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600-1300
|
15
|
≤50
|
1200
|
700
|
1180
|
680
|