§
Luxuse
Patent Intelligence
Sign In
Patent US4600514A successfully refreshed from Google Patents.
← Back to Patent Explorer
US4600514A Expired / Lapsed US ⏱️ 0.0 years remaining

Controlled gel time for solidification of multi-phased wastes

Assignee: Chem-Technics Inc
•
Filing: 1983-09-15
•
Granted: 1986-07-15
•
Expires: 2003-09-15
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A method of controlling the gelling time during the solidification of multi-phased liquid and semi-liquid wastes comprising admixing the waste with cement, a powdered alkali metal silicate and a liquid alkali metal silicate.

Inventors

  • 👤 Jesse R. Conner

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 11:15
CPC Classifications
C; C02; C02F; C02F11/00; C02F11/008; C04; C04B; C04B28/00; C04B28/24; C04B28/26; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91

Claims Analysis

Total Claims: 16
Claim 1
Independent Claim 89 words
A method of controlling the gelling time during the solidification of liquid and semi-liquid wastes, comprising the steps of: admixing the waste with cement, a powdered alkali metal silicate, and a liquid alkali metal silicate in relative quantities sufficient to cause the admixture to gell and set to a sedentary mass, the relative proportion of said powdered alkali metal silicate to said liquid alkali metal silicate being selected to cause the admixture to gel within a predetermined time; and thereafter allowing the admixture to set to a sedentary mass.
Claim 2
Independent Claim 89 words
A method of controlling the gelling time during the solidification of liquid and semi-liquid wastes, comprising the steps of: admixing the waste with cement, a powdered alkali metal silicate, and a liquid alkali metal silicate in relative quantities sufficient to cause the admixture to gell and set to a sedentary mass, the relative proportion of said powdered alkali metal silicate to said liquid alkali metal silicate being selected to cause the admixture to gel within a predetermined time; and thereafter allowing the admixture to set to a sedentary mass.
Claim 3
Dependent Claim 25 words
The method of claim 1, further comprising the step of admixing a dry water absorbent material having fine particles, said particles having high surface area.
Claim 4
Dependent Claim 34 words
The method of claim 2, wherein said water absorbent material is selected from the group consisting of clay, diatomaceous earth, calcium silicate, fumed silica, acrylic polymers, styrene polymers, natural gums, organo-aluminum compounds, and cellulosics.
Claim 5
Dependent Claim 11 words
The method of claim 1, wherein said cement comprises Portland cement.
Claim 6
Dependent Claim 14 words
The method of claim 1, wherein said powdered alkali metal silicate comprises sodium metasilicate.
Claim 7
Dependent Claim 16 words
The method of claim 1, wherein said liquid alkali metal silicate comprises a sodium silicate solution.
Claim 8
Dependent Claim 23 words
The method of claim 6, wherein said sodium silicate solution is between about 1% to about 45% sodium silicate by weight in water.
Claim 9
Dependent Claim 26 words
The method of claim 1, wherein the amount of said liquid alkali metal silicate added to the waste is between about 0.1% and 10% by volume.
Claim 10
Dependent Claim 35 words
The method of claim 1, wherein the amount of said powdered alkali metal silicate added to the waste is between about 0.01 pound per gallon of waste and about 1 pound per gallon of waste.
Claim 11
Dependent Claim 29 words
The method of claim 1, wherein the gel time of the admixture is increased by increasing the proportion of powdered alkali metal silicate to the liquid alkali metal silicate.
Claim 12
Dependent Claim 29 words
The method of claim 1, wherein the gel time of the admixture is decreased by decreasing the relative proportion of powdered alkli metal silicate to liquid alkali metal silicate.
Claim 13
Dependent Claim 10 words
The method of claim 1, wherein the waste is aqueous.
Claim 14
Dependent Claim 15 words
The method of claim 12, wherein the waste is multi-phased, whereby phase separation is prevented.
Claim 15
Dependent Claim 35 words
The method of claim 1, wherein the waste is non-aqueous, and further comprising the step of admixing with the waste water in an amount sufficient to cause the admixture to set to a sedentary mass.
Claim 16
Dependent Claim 24 words
The method of claim 1, wherein the powdered alkali metal silicate and the liquid alkali metal silicate are added to the waste substantially simultaneously.

References Cited (Backward Citations)

US29783A Cited
US1757470A Cited
US1466246A Cited
US1456303A Cited
US1470674A Cited
US1436061A Cited
US1463123A Cited
GB442765A Cited
US2016796A Cited
US2081541A Cited
US2227653A Cited
GB551701A Cited
GB599463A Cited
US2580409A Cited
US2662022A Cited
US2695850A Cited
US2809118A Cited
US3028340A Cited
US3137564A Cited
FR1246848A Cited
US3202214A Cited
US3094846A Cited
US3149985A Cited
US3178299A Cited
US3226318A Cited
US3180098A Cited
US3294563A Cited
US3306756A Cited
US3383228A Cited
US3305894A Cited
US3450661A Cited
GB1113014A Cited
US3437625A Cited
US3493406A Cited
US3558506A Cited
US3371712A Cited
US3591542A Cited
US3411582A Cited
US3374834A Cited
US3753620A Cited
US3615780A Cited
US3635742A Cited
US3656985A Cited
US3837872B1 Cited
US3837872A Cited
US3720609A Cited
USRE29783E Cited
US3854968A Cited
US3642503A Cited
GB1313626A Cited
US3883441A Cited
US3883360A Cited
US3804753A Cited
US4018679A Cited
US3741308A Cited
US4010108A Cited
US4056362A Cited
US3870535A Cited
US3902911A Cited
CA1009775A Cited
US3855391A Cited
US3859799A Cited
US3920795A Cited
US4015997A Cited
US4019628A Cited
US3970462A Cited
US3929586A Cited
US4116705A Cited
DE2426641A1 Cited
US3947283A Cited
US3893656A Cited
US3947284A Cited
US3959172A Cited
US4084981A Cited
US4028240A Cited
US4072019A Cited
US3971732A Cited
US4009116A Cited
US3841102A Cited
US3922172A Cited
US4229295A Cited
CA1003777A Cited
US4012320A Cited
US4028265A Cited
US3908388A Cited
US4196169A Cited
US4018616A Cited
US4018619A Cited
US4004428A Cited
AU487701B2 Cited
US3988258A Cited
US4060425A Cited
US3980558A Cited
US4030939A Cited
US4124405A Cited
US4132558A Cited
US4108677A Cited
US4077901A Cited
US4056937A Cited
US4122028A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1989-07-14 1990-01-13 1990-07-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1993-07-14 1994-01-13 1994-07-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1997-07-14 1998-01-13 1998-07-15 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag