Fibrous grease

What are Smooth or Fibrous Greases Give one example of a Fibrous Grease. 

Air flotation is one of the oldest methods for the removal of solids, oil grease and fibrous materials from wastewater. Suspended solids and oil grease removals as high as 99%+ can be attained with these processes. 

The chief nonmineral application of froth flotation is to the removal or oil or grease or fibrous materials from waste waters of refineries or food processing plants. Oil droplets, for instance, attach themselves to air bubbles which rise to the surface and are... 

To prepare a painted fabric for comparative purposes, small bands of ferrous oxide, an alizarin/purpurin mixture, ground up bloodroot (Sanguinaria canadensis L.) and bedstraw (Galium verum L.) were painted on linen fabric (Testfabrics L-57). As carriers or binder for the pigment colorants to be painted on the fibrous materials, beef fat was used as a substitute for bear grease and egg white was used as source for albumin. The various combinations of these materials were mixed and painted on areas of the test fabric as outlined in Table III. The painted test fabric was left to diy for 24 hours. 

The chief nonmineral application of froth flotation is to the removal or oil or grease or fibrous materials from waste waters of refineries or food processing plants. Oil droplets, for instance, attach themselves to air bubbles which rise to the surface and are skimmed off Coagulant aids and frothers often are desirable. In one kind of system, the water is saturated with air under pressure and then is pumped into a chamber maintained under a partial vacuum. Bubbles form uniformly throughout the mass and carry out the impurities. The unit illustrated in Figure 20.12 operates at 9 in. mercury vacuum and removes both skimmed and settled... 

Properties Grayish-white, fibrous powder aqueous suspensions neutral to litmus. Swells in water to a viscous colloidal solution. Insoluble in alcohol, ether, chloroform, and in water warmer than 50.5C soluble in glacial acetic acid unaffected by oils and greases stable up to approximately 300C stable to light. Combustible. 

A much more rewarding approach over the past 30 years has led to a range of so-called complex. Derivatives of a single metal reacted with a combination of different types of acids can be crystallised into the same fibrous thickener structure. The principle advantage of complex greases is their ability to withstand high operating temperatures. 

This mode of pulverization, though particularly applicable to fibrous substances, is sometime.s used for metals and hard materials. In the latter case the files may have finer and sharper teeth, and in both instances be particularly clean, and free from grease and dust. 

Greases, like emulsions, contain stable colloidal dispersions, but when thickner (gelling agent) u.scd is a soap (soap-ba.sed greases), the particles are not spherical but crystallites of fibrous, sha )c which result from polymerisation or linear aggregation of. soap micelles (colloidal soap molecules). The fibres get tangled and a three-dimensional interconnected structure results. The oil particles gel physically entrapped in the interstices of the tangled structure and/or adsorbed on the fibres. 

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