Floatation and flotation are methods of separating mixtures. Floatation is when a mixture is made up of a substance that will sink and one that will float. The mixture is poured into a container of liquid, causing the object that’s denser than the liquid to sink and the object that’s less dense to float.
To separate the substances, the heavier object can be skimmed off the surface, while the lighter object can be collected from the bottom of the container.
Flotation is a process of separating mixtures that are made of particles with different densities. Flotation utilizes the differences in surface tension between the particles to separate them. The process begins by mixing a slurry composed of water, reagents, and the mixture to be separated.
Depending on the specific properties of the particles, air or another gas is introduced at the bottom of the tank in order to create bubbles. These bubbles will rise to the surface, and attach themselves to the particles that differ in surface tension.
These particles are then skimmed off the surface when the bubbles reach the top, leaving behind the mixture that needs to be separated.
What is a flotation example?
A flotation example is a process used to separate materials with different densities. It often involves chemicals, such as oils and surfactants, to help increase the buoyancy of materials with lower densities.
Flotation is often used in the processing of minerals and ores in the metal and mineral extraction industries. It is also used as a treatment process for wastewater and to help coalesce oil-water mixtures.
An example of flotation in action can be seen in the recovery of gold from ore. When a stream of ore is placed in a vat of water, the gold particles are more buoyant and tend to float to the top. The gold is then skimmed off, while other minerals, such as quartz, sink to the bottom.
What is buoyancy Class 9 answer?
Buoyancy is an important concept in science, physics, and engineering. It is the natural tendency of an object to float or remain suspended in a fluid due to an upward push known as the buoyant force.
The buoyant force is equal to the weight of the displaced fluid. In other words, an object’s buoyancy is its weight divided by the weight of the fluid it displaces.
In class 9 science, buoyancy is explained by Archimedes’ Principle which states that “when a body is immersed partially or completely in a fluid, it experiences an upward force (buoyant force) equal to the weight of the fluid displaced by the body”.
This principle is used to explain why some objects float and others sink – their relative densities. Objects with a density lower than that of the surrounding fluid will float and objects with a density higher than that of the surrounding fluid will sink.
In addition to the Archimedes’ Principle, class 9 science also covers the material properties which impact buoyancy. Materials that are lighter, more porous or have pockets of air inside them will be less dense and will float more easily than materials that are denser, less porous, and contain fewer air pockets.
Examples of materials that are more buoyant are wood, cork, Styrofoam, and some plastics.
The concept of buoyancy is widely used in engineering, and it is integral to boat and ship design. In general, the higher the displacement of the boat, the higher the buoyancy force and the more stable the boat will be.
Additionally, the forces of buoyancy can be used to develop renewable energy sources, like wave and tidal energy.
How does a boat float in water class 9?
A boat floats in water because of the principle of buoyancy. This principle states that an object in water is buoyed up by a force equal to the weight of the water displaced by the object. An object can float when its density is less than that of the water it is floating in.
Water has a greater density than most materials used to make boats, like wood, steel, plastic, and fiberglass, so as long as a boat is made of these materials, it will float. In addition, the shape of a boat is designed to displace a large enough volume of water so that the buoyant force is greater than the weight of the boat.
This is why boats have a number of compartments; to make sure they don’t become fully submerged. The overall shape of the boat and the compartments within it help to maximize the boat’s buoyancy, making it able to float.
What is sinking in physics?
In physics, the term “sinking” refers to the process of objects moving toward the center of gravity when acted upon by the force of gravity. Specifically, an object sinks when the downward force of gravity overcomes the buoyancy of the object.
This is why when you drop a rock into a body of water, it will sink to the bottom. Sinking also applies to other forms of matter, such as air. Air will sink if it is cooled, or if the atmospheric pressure increases.
In this type of situation, the denser air behaves as though it has more mass and therefore sinks while the less dense air rises. Additionally, sinking can also refer to compressible fluids such as sound waves and strands of hair when they are subjected to a force greater than their own internal pressure.
How do you explain floatation?
Floatation is a physical process that occurs when an object or substance is placed in a fluid with a lower density, allowing the object to become buoyant and float on the surface. This phenomenon occurs due to the buoyant force created by the fluid, which is caused by the lower density of the fluid.
This buoyant force is equal to the weight of the displaced fluid; as the object is submerged, the fluid is displaced and the forces acting on the object from the fluid’s pressure are reduced. This results in an upward force on the object, ultimately causing it to float.
In order for an object to float, the object must displace more fluid than its own weight. Additionally, due to the Archimedes Principle, the greater the volume of an object, the greater the force it will experience from the fluid, thus allowing it to float higher.
Floatation is an important phenomenon and it is widely used in physics, shipbuilding, and even to make boats.
What are the types of flotation process?
The types of flotation process are classified into mechanical, pneumatic and froth flotation. Mechanical flotation is accomplished by agitating the pulp with mechanical impellers and air pumps to induce air into the slurry.
Pneumatic flotation uses pressurized air in the form of bubbles which act as the medium for separating minerals from the gangue. And froth flotation is used for fine particles that require the use of chemicals to separate the different minerals.
This process allows for the separation of a higher proportion of valuable minerals from ore or waste in comparison to manual methods. In froth flotation, the bubbles adhere to the surface of the mineral and then the mineral is filtered out from the froth on the top.
This process helps to create a profile of the minerals found in the ore, allowing for a more efficient use of energy and economical use of processing materials.
What is the flotation method forensics?
The flotation method of forensics is an investigative technique used to collect small pieces of evidence from waters, ponds, lakes, and other aquatic environments that have been disturbed. This method is primarily used to obtain evidence such as drugs, weapons, and other small items that may have been submerged in water or left in shallow areas.
By using this technique, detectives are able to investigate and collect evidence faster, more efficiently, and with less cost and environmental impact.
The flotation method involves a large device called a “float,” which is basically a buoyant material that is placed into the water and is used to float whatever item may have been submerged. The device, which consists of a material such as ABS plastic pipe, is tethered, and moves along the surface of the water collecting any pieces of evidence that are found within the water.
A net or scoop can also be used in the process to obtain the evidence.
Once the evidence has been collected, it is then taken back to the lab for further examination and analysis. The evidence is placed in a container and checked under a microscope for any sign of evidence.
From here, labs and detectives use the details found on the item to further investigate the case.
Overall, the flotation method is an efficient and reliable way to collect evidence in aquatic environments, which is often hard to do using traditional investigative methods. The flotation method has proven to be a reliable source of evidence and is often used to investigate cases that may be difficult or impossible to investigate in other ways.
How does a flotation cell work?
A flotation cell is a type of equipment utilized in a water-based flotation process to separate a mixture of solids and liquids. The process is used to separate various materials, including solids, such as minerals and metals, and liquids, such as oil and water.
The cell can be used in various industrial processes, such as in the treatment of wastewater, waste and process streams, and in the recovery of valuable minerals from ore.
Flotation cells are comprised of several components, including a shallow tank, a walkway, a stirrer, an air blower, and a froth bed. The shallow tank is filled with a mixture of the materials to be separated.
As the mixture is mechanically stirred, air is bubbled through the mixture, reducing the surface tension and creating tiny bubbles. These bubbles attach themselves to the particles in the mixture, creating what is known as a froth.
This froth can be skimmed off, leaving the heavier particles in the tank.
By adjusting the air intake and the stirring rate, different materials can be separated based on their density. Heavier particles will sink to the bottom of the tank, while lighter particles remain in the froth.
The materials collected on the froth bed can then be removed manually or sent through a series of filters to further separate the different components of the mixture.
The versatility of the flotation cell makes it a valuable asset in many industrial applications, from water treatment to mineral recovery. As the flotation process is not complicated and requires little maintenance, these cells can be used for long periods to effectively separate various materials.
Which ore can be concentrated by flotation?
Flotation is an extraction process that is used to extract minerals from ore. It is also known as mineral ore flotation, or ore flotation. Flotation is a separation process that takes advantage of the different physical and chemical properties of minerals and their associated ore-particles.
A wide variety of ores can be concentrated through flotation, including sulfide, oxide, and complex minerals like those found in porphyry deposits. Generally, sulfide minerals are the most amenable to flotation.
Examples of sulfide minerals that can be concentrated by flotation include pyrite, sphalerite, galena, chalcopyrite, pyrrhotite, and chalcocite. Oxide minerals such as hematite, cuprite, and cassiterite are also flotable.
Flotation process separations work best with coarse-grained, poorly crystalline, or non-sulphide minerals, such as quartz, muscovite, graphite, colemanite, and borax.
Flotation is particularly effective when the ore contains a large proportion of finely disseminated particles of valuable minerals, such as in sulfide ore bodies. Flotation has the advantage of being able to selectively separate individual particles according to their properties and the advantages of being able to separate the various minerals present in the ore by using froth flotation.
In addition, flotation is able to process ores that are too finely disseminated to be able to effectively use gravity separation, magnetic separation, or leaching methods.
