Ribbon Mixers - Revision history

Admin at 07:26, 21 August 2012

2012-08-21T07:26:42Z

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	[[File:Ribbon-Blender-Logo.gif\|thumb\|right\| Ribbon Mixer principle]]		[[File:Ribbon-Blender-Logo.gif\|thumb\|right\| Ribbon Mixer principle]]
	[[File:Vertical-ribbon-mixer.jpg\|thumb\|right\| A Vertical Ribbon Mixer]]		[[File:Vertical-ribbon-mixer.jpg\|thumb\|right\| A Vertical Ribbon Mixer]]
			In a '''Ribbon Mixer''', a long complicated single paddle is mounted axially and used to disperse the ingredients of the mixture. The ribbon is usually so constructed that the powder near the outside of the container is moved in one direction, whereas in the middle it is moved in the opposite direction. Ribbon [[Mixers\|mixer]] are available from several manufacturers and they all have their own type of ribbon. The reader should note that many of the companies mentioned with respect to a particular type of mixer in the discussion often make other type of mixers, as set out in their catalogs.


	In a '''Ribbon Mixer''', a long complicated single paddle is mounted axially and used to disperse the ingredients of the mixture. The ribbon is usually so constructed that the powder near the outside of the container is moved in one direction, whereas in the middle it is moved in the opposite direction. Ribbon [[Mixers\|mixer]] are available from several manufacturers and they all have their own type of ribbon. The reader should note that many of the companies mentioned with respect to a ~~particluar~~ type of mixer in the discussion often make other type of mixers, as set out in their catalogs.



	==Industrial use==		==Industrial use==

	Ribbon mixers are a basic industrial [[Mixers\|mixing]] tool. They consist, basically, of a trough-shaped casing (usually 2 to 3 times longer than it is wide) with a semicircular bottom, fitted with a horizontal longitudinal shaft on which are mounted arms supporting a combination of ribbon blades, paddles or helical screws set at a fairly close clearance to the semicircular mixer body so that no layer of material remains on the bottom of the mixer. The most effective design of ribbon layout is the double spiral in which the outer ribbon moves the product in one direction and the inner ribbon moves it in the opposite direction. This creates axial flow and prevents any buildup of material moved by the blades as they rotate is relatively small so that mixing times can be long. The capacity of the mixer should not be exceeded otherwise the ribbon and/or blades are not effective and the surface layers of the powder do not get adequately mixed.		Ribbon mixers are a basic industrial [[Mixers\|mixing]] tool. They consist, basically, of a trough-shaped casing (usually 2 to 3 times longer than it is wide) with a semicircular bottom, fitted with a horizontal longitudinal shaft on which are mounted arms supporting a combination of ribbon blades, paddles or helical screws set at a fairly close clearance to the semicircular mixer body so that no layer of material remains on the bottom of the mixer. The most effective design of ribbon layout is the double spiral in which the outer ribbon moves the product in one direction and the inner ribbon moves it in the opposite direction. This creates axial flow and prevents any buildup of material moved by the blades as they rotate is relatively small so that mixing times can be long. The capacity of the mixer should not be exceeded otherwise the ribbon and/or blades are not effective and the surface layers of the powder do not get adequately mixed.

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	Although ribbon mixers are relatively standard in design there are many modifications and commercial design options available depending on:		Although ribbon mixers are relatively standard in design there are many modifications and commercial design options available depending on:


	*materials characteristics		*materials characteristics
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	Sometimes, to improve the dispersion of ingredients in ribbon mixers, the ribbon blades are built to be close to the cylindrical wall to give high shearing. Sometimes the ribbons are also fitted with rubber wipers to ensure complete intermingling of the ingredients by lifting any packed material near the wall into the middle of the ribbon ensemble. It is difficult to predict the scale-up performance if one attempts to increase mixing captcity by going to a larger mixer of the same type.		Sometimes, to improve the dispersion of ingredients in ribbon mixers, the ribbon blades are built to be close to the cylindrical wall to give high shearing. Sometimes the ribbons are also fitted with rubber wipers to ensure complete intermingling of the ingredients by lifting any packed material near the wall into the middle of the ribbon ensemble. It is difficult to predict the scale-up performance if one attempts to increase mixing captcity by going to a larger mixer of the same type.

Mark at 10:23, 14 February 2012

2012-02-14T10:23:56Z

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Mark at 08:24, 14 February 2012

2012-02-14T08:24:20Z

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	In a '''Ribbon Mixer''', a long complicated single paddle is mounted axially and used to disperse the ingredients of the mixture. The ribbon is usually so constructed that the powder near the outside of the container is moved in one direction, whereas in the middle it is moved in the opposite direction. Ribbon mixer are available from several manufacturers and they all have their own type of ribbon. The reader should note that many of the companies mentioned with respect to a particluar type of mixer in the discussion often make other type of mixers, as set out in their catalogs.		In a '''Ribbon Mixer''', a long complicated single paddle is mounted axially and used to disperse the ingredients of the mixture. The ribbon is usually so constructed that the powder near the outside of the container is moved in one direction, whereas in the middle it is moved in the opposite direction. Ribbon [[Mixers\|mixer]] are available from several manufacturers and they all have their own type of ribbon. The reader should note that many of the companies mentioned with respect to a particluar type of mixer in the discussion often make other type of mixers, as set out in their catalogs.


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	==Industrial use==		==Industrial use==

	Ribbon mixers are a basic industrial mixing tool. They consist, basically, of a trough-shaped casing (usually 2 to 3 times longer than it is wide) with a semicircular bottom, fitted with a horizontal longitudinal shaft on which are mounted arms supporting a combination of ribbon blades, paddles or helical screws set at a fairly close clearance to the semicircular mixer body so that no layer of material remains on the bottom of the mixer. The most effective design of ribbon layout is the double spiral in which the outer ribbon moves the product in one direction and the inner ribbon moves it in the opposite direction. This creates axial flow and prevents any buildup of material moved by the blades as they rotate is relatively small so that mixing times can be long. The capacity of the mixer should not be exceeded otherwise the ribbon and/or blades are not effective and the surface layers of the powder do not get adequately mixed.		Ribbon mixers are a basic industrial [[Mixers\|mixing]] tool. They consist, basically, of a trough-shaped casing (usually 2 to 3 times longer than it is wide) with a semicircular bottom, fitted with a horizontal longitudinal shaft on which are mounted arms supporting a combination of ribbon blades, paddles or helical screws set at a fairly close clearance to the semicircular mixer body so that no layer of material remains on the bottom of the mixer. The most effective design of ribbon layout is the double spiral in which the outer ribbon moves the product in one direction and the inner ribbon moves it in the opposite direction. This creates axial flow and prevents any buildup of material moved by the blades as they rotate is relatively small so that mixing times can be long. The capacity of the mixer should not be exceeded otherwise the ribbon and/or blades are not effective and the surface layers of the powder do not get adequately mixed.

	Ribbon mixers are normally operated at room temperature but they may be jacketed for steam heating (at atmospheric pressure)or water cooling, should this be called for .		Ribbon mixers are normally operated at room temperature but they may be jacketed for steam heating (at atmospheric pressure)or water cooling, should this be called for .
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	*production requirements, particularly batch size and working conditions		*production requirements, particularly batch size and working conditions
	*machine characteristic such as loading and unloading facilities		*machine characteristic such as loading and unloading facilities


			One does not normally fill this type of mixer to more than 50% of the available volume. Normally the capacity of this type of mixer is restricted to anupper limit of 15 m.

			Sometimes, to improve the dispersion of ingredients in ribbon mixers, the ribbon blades are built to be close to the cylindrical wall to give high shearing. Sometimes the ribbons are also fitted with rubber wipers to ensure complete intermingling of the ingredients by lifting any packed material near the wall into the middle of the ribbon ensemble. It is difficult to predict the scale-up performance if one attempts to increase mixing captcity by going to a larger mixer of the same type.

Mark at 08:22, 14 February 2012

2012-02-14T08:22:36Z

← Older revision		Revision as of 02:22, 14 February 2012
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	[[File:Ribbon_mixer_principle.jpg\|thumb\|right\| Ribbon Mixer principle]]		[[File:Ribbon_mixer_principle.jpg\|thumb\|right\| Ribbon Mixer principle]]
	[[File:Ribbon-Blender-Logo.gif\|thumb\|right\| Ribbon Mixer principle]]		[[File:Ribbon-Blender-Logo.gif\|thumb\|right\| Ribbon Mixer principle]]
			[[File:Vertical-ribbon-mixer.jpg\|thumb\|right\| A Vertical Ribbon Mixer]]



	'''Ribbon ~~blenders~~''' ~~are~~ used to ~~blend dry~~ ingredients ~~like powders~~. They ~~have~~ blades that ~~look like big ribbons that spin inside a tank~~. The blades can be ~~angled in different ways to~~ get ~~the best mixing~~ for a ~~product.~~		In a '''Ribbon Mixer''', a long complicated single paddle is mounted axially and used to disperse the ingredients of the mixture. The ribbon is usually so constructed that the powder near the outside of the container is moved in one direction, whereas in the middle it is moved in the opposite direction. Ribbon mixer are available from several manufacturers and they all have their own type of ribbon. The reader should note that many of the companies mentioned with respect to a particluar type of mixer in the discussion often make other type of mixers, as set out in their catalogs.



			==Industrial use==

			Ribbon mixers are a basic industrial mixing tool. They consist, basically, of a trough-shaped casing (usually 2 to 3 times longer than it is wide) with a semicircular bottom, fitted with a horizontal longitudinal shaft on which are mounted arms supporting a combination of ribbon blades, paddles or helical screws set at a fairly close clearance to the semicircular mixer body so that no layer of material remains on the bottom of the mixer. The most effective design of ribbon layout is the double spiral in which the outer ribbon moves the product in one direction and the inner ribbon moves it in the opposite direction. This creates axial flow and prevents any buildup of material moved by the blades as they rotate is relatively small so that mixing times can be long. The capacity of the mixer should not be exceeded otherwise the ribbon and/or blades are not effective and the surface layers of the powder do not get adequately mixed.

			Ribbon mixers are normally operated at room temperature but they may be jacketed for steam heating (at atmospheric pressure)or water cooling, should this be called for .

			Although ribbon mixers are relatively standard in design there are many modifications and commercial design options available depending on:


			*materials characteristics
			*production requirements, particularly batch size and working conditions
			*machine characteristic such as loading and unloading facilities



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	There are a number of different type of mixers used in the feed industry with the most widely used being:		There are a number of different type of mixers used in the feed industry with the most widely used being:

	[[Vertical Ribbon Blenders]] – Used in small farms, they consist of a vertical screw which takes material to the top where it falls back down again, and repeats that process to mix materials		*[[Vertical Ribbon Blenders]] – Used in small farms, they consist of a vertical screw which takes material to the top where it falls back down again, and repeats that process to mix materials

	[[Horizontal Ribbon Mixers]] – Consisting of paddles or blades attached to a horizontal rotor, these mixers are normally mixer and can usually have a higher consistent homogeneity and short mixing times.		*[[Horizontal Ribbon Mixers]] – Consisting of paddles or blades attached to a horizontal rotor, these mixers are normally mixer and can usually have a higher consistent homogeneity and short mixing times.

Mark at 08:06, 14 February 2012

2012-02-14T08:06:28Z

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 [[File:Ribbon-blender.jpg|thumb|right| A continuous ribbon mixer developed for gentle continuous mixing of segregative and free flowing powders]]
 [[File:Ribbon_mixer_principle.jpg|thumb|right| Ribbon Mixer principle]]

Mark at 15:47, 13 February 2012

2012-02-13T15:47:00Z

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			[[File:HOSOKAWA-MICRON.gif\|right\|230px\|link=http://www.hosokawamicron.nl/template.asp?paid=47\|HOSOKAWA MICRON]]
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Mark at 14:05, 13 February 2012

2012-02-13T14:05:59Z

← Older revision		Revision as of 08:05, 13 February 2012
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	[[File:Ribbon-blender.jpg\|thumb\|right\| A continuous ribbon mixer developed for gentle continuous mixing of segregative and free flowing powders]]		[[File:Ribbon-blender.jpg\|thumb\|right\| A continuous ribbon mixer developed for gentle continuous mixing of segregative and free flowing powders]]
			[[File:Ribbon_mixer_principle.jpg\|thumb\|right\| Ribbon Mixer principle]]

Mark at 13:47, 13 February 2012

2012-02-13T13:47:16Z

← Older revision		Revision as of 07:47, 13 February 2012
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			[[File:Ribbon-blender.jpg\|thumb\|right\| A continuous ribbon mixer developed for gentle continuous mixing of segregative and free flowing powders]]

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