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process for the production of precipitated silica

process for the production of precipitated silica

US5484581A - Process for the production of precipitated ...

Precipitated silica which has a BET surface area of 10-130 m 2 /g, a CTAB surface area of 10-70 m 2 /g , an average particle diameter of 5-20 μm, a Cu abrasion value in a 10% glycerol dispersion of 4-50 mg and thickening behavior in a CMC solution (20% dispersion) of 300-3500 mPas, is produced by simultaneously adding alkali silicate (weight modulus SiO 2 :alkali oxide=2.5-3.9:1) and a ...

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CA2129607A1 - Process for the Production of a Precipitated ...

Precipitated silica which has a BET surface area of 10-130 m2/g, a CTAB surface area of 10-70 m2/g, an average particle diameter of 5-20 µm, a Cu abrasion value in a 10% glycerol dispersion of 4-50 mg and thickening behavior in a CMC solution (20% dispersion) of 300-3500 mPa.s, is produced by this invention. The process comprises simultaneously adding alkali metal silicate (weight modulus ...

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US8114371B2 - Process for production of precipitated ...

Process for the production of precipitated silica from olivine including the following steps: providing olivine particles with a particle size preferably below 1 mm in diameter, preferably mixing olivine and water to form an olivine/water slurry, mixing the olivine/water slurry with hydrochloric acid (HCl), preferably at a Concentration at 18 wt % or above, and at a temperature preferably ...

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Process for the production of precipitated silica ...

Jan 16, 1996  1. A process for the production of a precipitated silica, said process comprising simultaneously adding alkali silicate with a weight modulus SiO 2 :alkali oxide=2.5-3.9:1 and a mineral acid to an initial amount of water, which has been adjusted to a pH value of 7.0 to 9.9 or 10.0 to 10.7 by the addition of water glass, to form a mixture ...

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US20110176985A1 - Production of precipitated silica ...

Precipitated silica is produced by a process that includes a step for filtering and washing an aqueous suspension (S), comprising the following steps: (a) filtering a first portion (S 1 ) of a precipitated silica suspension (S), whereby a cake (G 1 ) is formed and said cake (G 1 ) is then washed and a suspension (S′ 1 ) is formed by suspending the thereby obtained washed cake (G 1 ), notably ...

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CA2129607A1 - Process for the Production of a Precipitated ...

Precipitated silica which has a BET surface area of 10-130 m2/g, a CTAB surface area of 10-70 m2/g, an average particle diameter of 5-20 µm, a Cu abrasion value in a 10% glycerol dispersion of 4-50 mg and thickening behavior in a CMC solution (20% dispersion) of 300-3500 mPa.s, is produced by this invention. The process comprises simultaneously adding alkali metal silicate (weight modulus ...

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Process for the production of precipitated silica ...

Jan 16, 1996  1. A process for the production of a precipitated silica, said process comprising simultaneously adding alkali silicate with a weight modulus SiO 2 :alkali oxide=2.5-3.9:1 and a mineral acid to an initial amount of water, which has been adjusted to a pH value of 7.0 to 9.9 or 10.0 to 10.7 by the addition of water glass, to form a mixture ...

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Manufacturing Process For Precipitated Silica - News ...

Jul 27, 2016  Stage 1: Silica Sand+Sodium+Acid→Sodium Silicate. Stage 2:Sodium Silicate+Water+Acid→Precipitated Silica→Press Filtering . Stage 3:Liquifying and Drying→Precipitated Silica Powder. Stage 4:Granulating to Precipitated Silica Granular and Packing

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US Patent for Precipitated silica production process ...

Jul 25, 2011  A precipitated silica production process that includes a precipitation reaction between a silicate and an acid is described, in which the acid used in at least one of the steps of the process is a concentrated acid.

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Precipitated Silica Factory -Silica Manufacturing Process ...

Jun 01, 2017  Precipitated silica commonly known as silica, also known as hydrated silicic acid, light silica, chemical expression is generally written as mSiO2 nH2O, th...

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Precipitated Silica - an overview ScienceDirect Topics

Precipitated silica and colloidal silica are produced in the process shown in Figure 4.37.Since the original raw material is silicic acid sodium, relatively inexpensive SiO 2 particles are obtained. Precipitated silica ((a) in the figure) is not a single particle but rather a body of several precipitated

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What is Precipitated Silica PPG Silica Products

Precipitated silica, a form of synthetic amorphous silicon dioxide, is derived from quartz sand, a crystalline form of silicon dioxide. The physical properties of precipitated silica can be manipulated during the manufacturing process to deliver products with a wide range of performance-enhancing features engineered for many different end-use applications.

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Manufacture

Raw materials for the production of precipitated silica and silica gels are aqueous alkali metal silicate solutions (e.g. waterglass) and mineral acids, (e.g. sulphuric acid). An alkali metal silicate solution reacts with mineral acids to generate precipitates or gels, depending on the reaction and process conditions.

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Precipitated Sillica Plant from RHA – POWERTECH

As green tire production grows, the volume of GREEN precipitated silica used in these tires is surging by an estimated 20 percent annually from 2013-18, compared with just more than 5 percent growth of precipitated silica use in all other applications for the same period.

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Yava Silica – Environmentally Friendly Silica Process

YTI has modified the process to produce high purity precipitated silica directly from a range of low cost feed stocks. As a result of the successful testing of its technology, YTI has created Yava Silica LLC to develop commercial precipitated silica production facilities incorporating the new process.

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Precipitated Silica Production Cost Analysis 2020 ...

Precipitated Silica Production Cost Analysis 2021 Precipitated silica or Precipitated SiO2 is an amorphous form of silica. In appearance, it is a white, powdery material. Precipitated silica is manufactured by the precipitation from a solution with silicate salts.

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Precipitated Silica Prices Historical Current

Its production started in the 1940s, and, currently, precipitated silica has the greatest commercial importance between the three types of amorphous silica. Uses. Due to small particle size and complex aggregate structure, Precipitated Silica has been widely used in the reinforcement of elastomer products, such as shoe soles, industrial rubber ...

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China Precipitated Silicas Market Report Forecast 2021 ...

China Precipitated Silicas Market Sales, 2016-2021, 2022-2027, (K MT) China top five Precipitated Silicas companies in 2020 (%) The global Precipitated Silicas market size is expected to growth from US$ 3992.7 million in 2020 to US$ 5506.7 million by 2027; it is expected to grow at a CAGR of 4.7% during 2021-2027.

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Paper production, paper processing, paper coatings, and inkjet coatings in particular—Evonik offers the widest range of silica products in the market. High-quality, cost-efficient and engineered to meet the requirements of the whole paper and digital printing industry.

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Precipitated silicas and process for their production and ...

The precipitated silica suspension is then adjusted to a pH of approximately 3.5 with (96%) sulfuric acid. The precipitated silica suspension which is obtained has a solid material content of 92.0 g/l. The precipitated silica obtained following filtering and washing out has the physical-chemical features listed in Table 1 under Example 2. EXAMPLE 3

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Process for production of precipitated silica from olivine ...

Process for the production of precipitated silica from olivine including the following steps:—providing olivine particles with a particle size preferably below 1 mm in diameter,—preferably mixing olivine and water to form an olivine/water slurry,—mixing the olivine/water slurry with hydrochloric acid (HCl), preferably at a concentration at 18 wt % or above, and at a temperature ...

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US Patent for Precipitated silica production process ...

Jul 25, 2011  A precipitated silica production process that includes a precipitation reaction between a silicate and an acid is described, in which the acid used in at least one of the steps of the process is a concentrated acid.

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Process for preparing precipitated silica - RHODIA OPERATIONS

1. A process for preparing precipitated silica, comprising a reaction of a silicate with at least one acid, whereby a silica suspension is obtained, followed by separation and drying of said silica suspension, wherein the reaction of the silicate with the at least one acid is performed in the following steps: (i) forming an aqueous stock with a pH of between 2 and 5, (ii) simultaneously adding ...

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Manufacture

Raw materials for the production of precipitated silica and silica gels are aqueous alkali metal silicate solutions (e.g. waterglass) and mineral acids, (e.g. sulphuric acid). An alkali metal silicate solution reacts with mineral acids to generate precipitates or gels, depending on the reaction and process conditions.

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Effect of Important Precipitation Process Parameters on ...

Jul 01, 2009  Effect of Important Precipitation Process Parameters on the Redispersion Process and the Micromechanical Properties of Precipitated Silica. C. Schilde ... the importance of the industrial mass production of high-quality products and specialty chemicals by precipitation increased rapidly. ... as one of the most important parameters of the semi ...

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Synthesis of a Green Nano-Silica Material Using ...

1.1. Current Production of Nano-Silica . At present, a wide range of silica products (see . Figure 1) are manufactured industrially for a diverse array of ap- plications. Silicas are mainly used for reinforcing, thick- ening and flattening purposes. World demand for spe- cialty silicas, which include precipitated silica

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Effect of drying technique on the physicochemical ...

The conventional drying (oven drying) method used for the preparation of precipitated mesoporous silica with low surface area (>300 m 2 /g) and small pore volume is often associated with a high production cost and a time consuming process. Therefore, the main goal of this study was to develop a cost-effective and fast drying process for the production of precipitated mesoporous silica using ...

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A feasibility study of the biologically inspired green ...

May 15, 2014  1. Introduction. Specialty silicas, obtained by processing low valued silica sand and quartzite, are generally classified based on their properties and methods of production and include fumed silica, precipitated silica, silica gels and sols, and micro-silica .The estimated 2012 global annual production for specialty silica was 2.4 million tonnes, which corresponds to a market value of

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Precipitated Silica Prices Historical Current

Its production started in the 1940s, and, currently, precipitated silica has the greatest commercial importance between the three types of amorphous silica. Uses. Due to small particle size and complex aggregate structure, Precipitated Silica has been widely used in the reinforcement of elastomer products, such as shoe soles, industrial rubber ...

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In-situ surface modification of precipitated silica ...

Apr 17, 2021  Preparation of hydrophobic precipitated silica nanoparticles by carbonation reaction using CO 2 greenhouse gas instead of inorganic acid with the Na 2 SiO 3 solutions has attracted widespread concern. Polymer surface modifiers may become inactive owing to the pH value of the reaction system changes constantly during the carbonation and In-situ surface modification process.

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Precipitated Silica Production Cost Reports Q2 2020

This report presents the economics of Precipitated Silica production from a sodium silicate solution and sulfuric acid in the United States. In the process, the sodium silicate solution is treated with sulfuric acid. The solution is precipitated, filtered, washed, and dried, producing Precipitated Silica.

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(PDF) Precipitated silica from Rice husk ash by IPSIT process

A novel process for the manufacture of precipitated silica from rice husk ash, having a surface area ranging from $50-400m^2/g$ and tap density of $80-600kg/m^3$ having multiple applications in ...

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PRODUCTION AND CHARACTERIZATION OF PRECIPITATED SILICA ...

The mechanical fragmentation process was applied to obtain precipitated silica from the extracted silica. The precipitation conditions were: stirring speed of 1160 RPM, pH of 8.75, temperature of ...

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