Abstract: The invention provides methods and compositions for the reduction of dust in an environment through application to a hard surface in that environment or dispersal of dust into the environment is minimized. The composition allows for instant reduction of dust and for the elimination of the absorption of moisture on surfaces that are prone to this over time. The invention is usable with mined minerals or synthesized materials that are prone to produce dust and absorb moisture during storage and transport so the composition can allow for a safer environment and longer storage of products.

Abstract: A quiet door hinge assembly may include a first hinge wing having at least two knuckles and a second hinge wing having at least three knuckles. A central pin may be disposed to connect the first and second hinge wings by passing through the knuckles. Non-metallic separators may be placed between the knuckles disposed to preclude direct contact between the knuckles.

Abstract: The invention provides methods and compositions for the reduction of dust in an environment through application to a hard surface in that environment or dispersal of dust into the environment is minimized. The composition allows for instant reduction of dust and for the elimination of the absorption of moisture on surfaces that are prone to this over time. The invention is usable with mined minerals or synthesized materials that are prone to produce dust and absorb moisture during storage and transport so the composition can allow for a safer environment and longer storage of products.

Abstract: This invention is directed to methods for quickly inverting and dispersing a flocculant in a digestion process prior to the production of an aqueous slurry to achieve settlement of solids and clarification of the slurry water. In particular, this invention relates to methods for quickly inverting a flocculant-containing emulsion in-line without significantly destabilizing the emulsion. The methods comprise dosing water with at least one water-in-oil emulsion containing at least one of a flocculant polymer and a hydrophilic surfactant and subjecting the water and emulsion to a high shear, turbulent reverse flow, such that the combination of the surfactant and shear synergistically inverts the emulsion, so the flocculant may be directly injected.

Abstract: The current invention relates to a composition that allows for the reduction of dust in an environment through application to a hard surface in that environment or dispersal of dust into the environment is minimized. The composition allows for instant reduction of dust and for the elimination of the absorption of moisture on surfaces that are prone to this over time. The invention is usable with mined minerals or synthesized materials that are prone to produce dust and absorb moisture during storage and transport so the composition can allow for a safer environment and longer storage of products.

Abstract: An effervescent chitosan-containing solid composition for agglomerating solids in and clarifying a slurry in a solid-liquid separation process or system, such as a mining pond, and a method of using the composition is described and claimed. The slurry contains water and solids. The composition includes chitosan, a solid acid, and a carbonate or a bicarbonate source. Optionally, the composition is formulated with an inert fluorescent tracer, to aid in dosing the composition to the slurry in the system. This clarification process causes solids to settle to the bottom of the pond, or otherwise aid in separating the solids from the aqueous phase, leaving the water less turbid than before the application of chitosan.

Abstract: This invention is directed to methods for quickly inverting and dispersing a flocculant in an aqueous slurry to achieve settlement of solids and clarification of the slurry water. In particular, this invention relates to methods for quickly inverting a flocculant-containing emulsion in-line without significantly destabilizing the emulsion. The methods comprise dosing water with at least one water-in-oil emulsion containing at least one of a flocculant polymer and a hydrophilic surfactant and subjecting the water and emulsion to a high shear, turbulent reverse flow, such that the combination of the surfactant and shear synergistically inverts the emulsion, so the flocculant may be directly injected into the slurry. In an alternative embodiment, the emulsion is fed directly to the slurry to be treated and subjected to high shear, such that the emulsion inverts in situ, releasing the flocculant into the slurry for solids/liquid separation.

Abstract: This invention is directed to methods for quickly inverting and dispersing a flocculant in an aqueous slurry to achieve settlement of solids and clarification of the slurry water. In particular, this invention relates to methods for quickly inverting a flocculant-containing emulsion in-line without significantly destabilizing the emulsion. The methods comprise dosing water with at least one water-in-oil emulsion containing at least one of a flocculent polymer and a hydrophilic surfactant and subjecting the water and emulsion to a high shear, turbulent reverse flow, such that the combination of the surfactant and shear synergistically inverts the emulsion, so the flocculant may be directly injected into the slurry. In an alternative embodiment, the emulsion is fed directly to the slurry to be treated and subjected to high shear, such that the emulsion inverts in situ, releasing the flocculant into the slurry for solids/liquid separation.

Abstract: Fatty acids of fatty alkanolamides improve the shear stability of water-in-oil emulsions of acrylic acid polymers. Other advantages are afforded when fatty acids are used with these emulsions.

Abstract: A process of improving the flocculation activity of water-soluble anionic vinyl polymers used to flocculate suspended solids from aqueous systems, which aqueous systems also contain adverse amounts of calcium, magnesium, ferrous and/or ferric ions, the improvement which comprises performing the process in the presence of an effective amount of an alkali metal salt selected from the group consisting of alkali metal tetraborates, tribasic phosphates, permanganates and silicates.

Abstract: An improved coal-water slurry containing finely divided coal particles and a dispersing agent which is comprised of a water-soluble homopolymer of a monomer represented by the formula: ##STR1## wherein: M is hydrogen, lithium, sodium, potassium, magnesium, or calcium;R is allyl or methallyl;R.sub.1 is hydrogen, allyl or methallyl;R.sub.2 is hydrogen or sulfonate;R.sub.3 is hydrogen or sulfonate; and providing that R.sub.2 is not the same as R.sub.3.These improved coal-water slurries are best formulated at a pH of at least 6 and, preferably, above 8. The dispersants have a molecular weight between 1000-20,000.